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10. What is the mass of the products compared to the mass of the reactants? 6CO2 + 6H2O ----- C6H12O6 + 6O2
C. Gas bubbles are produced.
C. In order to produce the desired mass of product, she will need to know the mass of the reactant to use.
A. Yes, a new yellow liquid is formed
A. At what temperature will the substances react?
A. The mass of the products is equal to the mass of the reactants.
C. the clouds forming rain from water vapor
C. a thermometer
A. A piece of wood burning in a campfire.
12. A beaker with two liquid compounds is placed on a hot plate and heated. What question can be best answered from this experiment?
C. Gas bubbles are produced.
C. In order to produce the desired mass of product, she will need to know the mass of the reactant to use.
A. Yes, a new yellow liquid is formed
A. At what temperature will the substances react?
A. The mass of the products is equal to the mass of the reactants.
C. the clouds forming rain from water vapor
C. a thermometer
A. A piece of wood burning in a campfire.
11. Why is it important for a chemist to have a balanced chemical equation for a reaction?
C. Gas bubbles are produced.
C. In order to produce the desired mass of product, she will need to know the mass of the reactant to use.
A. Yes, a new yellow liquid is formed
A. At what temperature will the substances react?
A. The mass of the products is equal to the mass of the reactants.
C. the clouds forming rain from water vapor
C. a thermometer
A. A piece of wood burning in a campfire.
4. Which of the following is an example of a chemical change?
C. Gas bubbles are produced.
C. In order to produce the desired mass of product, she will need to know the mass of the reactant to use.
A. Yes, a new yellow liquid is formed
A. At what temperature will the substances react?
A. The mass of the products is equal to the mass of the reactants.
C. the clouds forming rain from water vapor
C. a thermometer
A. A piece of wood burning in a campfire.
1. Felipe is observing how acetic acid and sodium bicarbonate react with one another in a volcano model. What evidence can he look for to indicate a chemical reaction has taken place?
C. Gas bubbles are produced.
C. In order to produce the desired mass of product, she will need to know the mass of the reactant to use.
A. Yes, a new yellow liquid is formed
A. At what temperature will the substances react?
A. The mass of the products is equal to the mass of the reactants.
C. the clouds forming rain from water vapor
C. a thermometer
A. A piece of wood burning in a campfire.
2. During a science lab, Jessica records the following data when Liquid A and Liquid B are combined in a beaker. Did a chemical change occur? Why?
C. Gas bubbles are produced.
C. In order to produce the desired mass of product, she will need to know the mass of the reactant to use.
A. Yes, a new yellow liquid is formed
A. At what temperature will the substances react?
A. The mass of the products is equal to the mass of the reactants.
C. the clouds forming rain from water vapor
C. a thermometer
A. A piece of wood burning in a campfire.
5. Marlene's family goes on an autumn campout to a local state park. During the camp out she notices several things that could be a chemical change. Which of the following is not a chemical change?
C. Gas bubbles are produced.
C. In order to produce the desired mass of product, she will need to know the mass of the reactant to use.
A. Yes, a new yellow liquid is formed
A. At what temperature will the substances react?
A. The mass of the products is equal to the mass of the reactants.
C. the clouds forming rain from water vapor
C. a thermometer
A. A piece of wood burning in a campfire.
7. Which of the following pieces of lab equipment is needed to measure the amount of heat released during a chemical change?
C. Gas bubbles are produced.
C. In order to produce the desired mass of product, she will need to know the mass of the reactant to use.
A. Yes, a new yellow liquid is formed
A. At what temperature will the substances react?
A. The mass of the products is equal to the mass of the reactants.
C. the clouds forming rain from water vapor
C. a thermometer
A. A piece of wood burning in a campfire.
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