p1g2+mp4



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 * __Chemical Formula Lab:__ **


 * **Combination** || **Prediction(s)**  || **Observations**  ** (How much? What color? What reactions? Etc.) **  ||
 * CaCl2 + H2O || Fizzing/bubbling  || * Begining temp: 20.2
 * water becomes cloudy
 * Final temp.: 20.2 ||
 * BB + CaCl2 || Change in color (yellow)  || * starting temp: 20.6
 * final temp: 25.6
 * bubbled, but stayed the same color ||
 * NaHCO3 + BB || <span style="color: #1269f3; display: block; font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; text-align: center;">Change in color (yellow)  || * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">starting temp: 20.3
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">ending temp: 19.6
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">NaHCO3 dissolves ||
 * <span style="color: #1269f3; display: block; font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; text-align: center;">ChNaO3 + CaCl2 || <span style="color: #1269f3; display: block; font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; text-align: center;">Bubbling  || * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">no change ||
 * <span style="color: #1269f3; display: block; font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; text-align: center;">NaHCO3 + H2O || <span style="color: #1269f3; display: block; font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; text-align: center;">Precipitate  || * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">water becomes cloudy
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">NaHCO3 settles to the bottum
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">suspension ||
 * <span style="color: #1269f3; display: block; font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; text-align: center;">NaHCO3 + CaCl2 + H2O || <span style="color: #1269f3; display: block; font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; text-align: center;">Gas formation  || * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">starting temp: 19.2
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">ending temp: 21.2
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">fizzing
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">bubbles
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">liquid rises ||
 * <span style="color: #1269f3; display: block; font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; text-align: center;">NaHCO3 + CaCl2 + BB || <span style="color: #1269f3; display: block; font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; text-align: center;">Turn yellow, bubbling/fizzing  || * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">15mL of BB
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">Temp before: 19.7 (Celsius)
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">BB becomes cloudy and fizzes
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">BB gasses
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">turns white/yellow
 * <span style="color: #1269f3; font-family: Tahoma,Geneva,sans-serif;">Final temp.: 20.2 ||

**Summary:** For each trial, we added a different combination of substances. For each combination, we made a prediction of what would happen. When we tested the combinations, we checked to see if our predictions were right. We found that as the combinations of substances became more concentrated, they reacted more quickly.

<span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Lab Report

<span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Background Information-

<span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Chemicals:


 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Water
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o H2O
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Nonflammable
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Nontoxic
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">CaCl2
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Soluble
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Food additive
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Medicinal uses
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Sodium bicarbonate
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Slightly toxic if too much is consumed
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Baking soda
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Extinguish fire
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Bromothymol blue
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Chemical indicator
 * <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o C27H28Br2O5S

<span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Conclusion- We tested a total of 8 solutions. All chemicals reacted differently, some bubbled, fizzed, dissolved or changed colors. BB & Calcium Chloride stayed separated, dissolved, and barley changed color. All in all, different combinations make different chemical reactions. Our hypothesis was supported because when bubbles were formed we new a chemical reaction was taking place.

<span style="color: #0ced0c; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Experimental Design:

<span style="color: #0ced0c; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Question: What are signs of a chemical reaction taking place?

<span style="color: #0ced0c; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Hypothesis: Bubbles, odor, color change, or creation of a precipitate are signs of a chemical reaction taking place.

<span style="color: #0ced0c; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Independent Variable: combination of chemicals in the test tube

<span style="color: #0ced0c; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Dependent Variable: signs of a chemical reaction

<span style="color: #0ced0c; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Constants: 15 mL of liquid, .5 g of solid

<span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Precipitate and Mass Lab <span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 110%;">5/3/11

<span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Question: How does the mass of the reactants compare to the mass of the products in a chemical reaction when a precipitate is formed?

<span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Hypothesis: The mass of the reactants will be equal to the mass of the products in a chemical reaction when a precipitate is formed.

<span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 110%;">IV: mass of the reactants

<span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 110%;">DV: mass of the produc <span style="color: #00ffb9; font-family: 'Comic Sans MS',cursive; font-size: 120%;">ts

<span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Materials/Background Information:


 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Lead nitrate
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Toxic
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o White colorless crystals
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o May lead to lead poisoning
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Pb(NO3)2
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">o Can’t be inhaled, ingested, or come in contact with skin
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Sodium iodide
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">NaI
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">White, crystalline salt
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Used in radiation detection
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Food supplement
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 110%;">Used in medicine

<span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Experiment:


 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Lab Group || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Glassware (g) || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Reactants & Glassware (g) || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Reactants (g) || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Products & Glassware (g) || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Products (g) || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Change in Mass (g) ||
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">1 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">94.2 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">99.2 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">5.0 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">99.1 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.9 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">-0.1 ||
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">2 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">95.5 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">99.5 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.0 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">99.5 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.0 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">0 ||
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">3 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">80.15 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">84.4 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.25 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">84.5 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.35 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">+0.1 ||
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">82.2 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">86.4 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.2 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">86.4 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.2 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">0 ||
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">5 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">74.4 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">79.0 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.6 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">79.0 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.6 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">0 ||
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">6 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">92.9 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">96.9 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">4.0 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">96.7 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">3.8 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">-0.2 ||
 * <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">7 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">88.3 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">92.0 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">3.7 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">92.0 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">3.7 || <span style="color: #800080; font-family: 'Comic Sans MS',cursive; font-size: 120%;">0 ||

<span style="color: #00ff00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Observations:


 * <span style="color: #00ff00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Produced a yellow precipitate
 * <span style="color: #00ff00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Color change….white to yellow
 * <span style="color: #00ff00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">No change in mass
 * <span style="color: #00ff00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Precipitate stayed in the bottom of test tube
 * <span style="color: #00ff00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Clear liquid filtered through (filtrate)
 * <span style="color: #00ff00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Residue is a bright yellow, chalky, powder
 * <span style="color: #00ff00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Lead iodide is liquid
 * <span style="color: #00ff00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Sodium nitrate is solid

<span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Chemical Equation: <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Pb(NO3)2+2NaI=2Na(NO3)+PbI2

<span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Summary: <span style="color: #ff009e; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Our hypothesis was supported. The products' mass was 99.5 grams and is equal to the reactants' mass of 99.5 grams. This supports the Law Of Conservation of Mass.

<span style="color: #ff6b00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Products:


 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Sodium nitrate
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o NaNO3
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o White salt
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o Soluble in water
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o Used in fertilizers
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o Food preservative
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Lead iodide
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o PbI2
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o Bright yellow at room temp.
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o Detects high energy
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o Toxic
 * <span style="color: #ffaa00; font-family: 'Comic Sans MS',cursive; font-size: 120%;">o Used to be used in paints

<span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Conclusion: The mass of the reactants was equal to the mass of the products. This means that our experiment obeyed the law of conservation of mass. The law of conservation of mass states that during a chemical reaction, mass cannot be created or destroyed. The reactants also did not lose or gain mass.

<span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Law of Conservation of Mass Video: <span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 120%;">[]

<span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 120%;">Law of Conservation of Mass Lab video: <span style="color: #00b6ff; font-family: 'Comic Sans MS',cursive; font-size: 120%;">[]

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