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WorksheetsChemical Reactions Quiz
Total questions: 10
Worksheet time: 5mins
In a chemical reaction in which sodium and chlorine are chemically combined to form salt, which of the following are the reactants?
Sodium and chlorine
Salt and chlorine
Sodium and salt
Salt only
In a chemical reaction in which sodium bicarbonate and vinegar are chemically combined to form carbon dioxide, water, and sodium acetate, which of the following are the products?
Sodium bicarbonate and water
Sodium acetate, water, and carbon dioxide
Sodium bicarbonate and vinegar
Carbon dioxide only
Which answer choice is NOT evidence that a chemical change occurred?
The temperature changes.
The reactants can be mixed.
A new substance forms.
A gas forms.
Both physical and chemical changes affect matter, but physical changes are __________ and chemical changes are __________.
reversible, irreversible
irreversible, reversible
permanent, reversible
temporary, permanent
An ice cube melts in a cup of water. Has a chemical reaction occurred?
Yes, a new substance formed.
Yes, a gas was given off.
No, the color did not change.
No, a phase change does not always indicate a chemical change.
Which of the following is an example of a chemical change?
Rust forming on your bike
A popsicle melting in the Sun
Rolling a ball of dough into a flat pizza
Boiling a pot of water
Which of the following is an example of a physical change?
Rust forming on your bike
Sugar and butter being heated to form caramel
Rolling a ball of dough into a flat shape
Burning a log at a campfire
Which component represents a reactant in the diagram above?
Carbon dioxide gas
Water
Baking soda
Oxygen
Which component represents a product in the diagram above?
Carbon dioxide gas
Air
Vinegar
Baking soda
Baking soda and vinegar chemically change. What evidence from their combination supports a chemical change?
The baking soda dissolves.
A gas is produced.
A mixture is formed.
The color changes.
