Chemical Energy Part 2 Unit Test (HS)

Using the solubility curve given, what mass of solute will dissolve in 100mL of water at the following temperature? KNO3 at 70°C

• 120 g

• 45 g

• 130 g

• 125 g

Tags

GA.SPS6.c.

Using the solubity curve given, which of the following substances is most soluble in water at 15°C.

• KNO3

• NaCl

• KCl

• NH4Cl

Tags

GA.SPS6.c.

Using the solubity curve given, a solution that contains 70g of NaNO3 at 30°C (in 100 mL H2O) would be classified as _____

• Saturated

• Unsaturated

• Supersaturated

• Diluted

Tags

GA.SPS6.c.

Using the solubility curve given, a solution that contains 50g of NH4Cl at 50°C (in 100 mL H2O) would be classified as_____

• Saturated

• Unsaturated

• Supersaturated

• Diluted

Tags

GA.SPS6.c.

Using the solubility curve given, a solution that contains 30g of KClO3 at 50°C (in 100 mL H2O) would be classified as______________.

• Saturated

• Unsaturated

• Supersaturated

• Diluted

Tags

GA.SPS6.c.

What type of reaction does the following equation represent? Na + KCl → K + NaCl

• Synthesis reaction

• Decomposition reaction

• Single replacement reaction

• Double replacement reaction

Tags

GA.SPS3.a.

Which choice represents the total number of Oxygen atoms in the chemical equation 4H + O₂ ➔ 2H₂O?

• 2 on the reactant side, 2 on the product side

• 1 on the reactant side, 2 on the product side

• 1 on the reactant side, 1 on the product side

• 2 on the reactant side, 1 on the product side

Tags

GA.SPS3.b.

In a chemical reaction, 100 grams of calcium chloride was added to 300 grams of baking soda for a total mass of 400 grams. Assuming that the law of conservation of mass was demonstrated during this reaction, what would be the mass of the product?

• 200 grams, because the mass of the product is less than the mass of the reactants.

• 400 grams because the mass of the product is equal to the sum of the reactants.

• 500 grams because the mass of the product is more than the mass of the reactants.

• It cannot be determined from the given information.

Tags

GA.SPS3.a.

The diagram above shows a candle before, during, and after burning. The mass before and after the reaction is also shown. What can you conclude about the chemical reaction?

• When candle wax melts and becomes solid again, it is less dense than the original candle wax.

• Because the reaction only involves a change in state, the mass of the products is less.

• The mass of the candle is lower after burning because matter was destroyed during the reaction.

• When the candle was burned, 7 grams of smoke and ash was released into the air.

Tags

GA.SPS3.a.

A student conducts an experiment to identify the pH of some common household substances. The data is recorded in this table. pH Values for Common Household Substances Substance pH Ammonia 11.9 Drain Cleaner 13.5 Hand Soap 10.1 Lemon Juice 2.3 Vinegar 3.0 Water 6.8 Which substance would be classified as containing the highest concentration of hydroxide ions?

• Ammonia

• Drain Cleaner

• Lemon Juice

• Vinegar

Tags

GA.SPS6.e.