Chemical Reactions Test

The mass of the reactants must be ______________ the mass of the products

• greater than
• less than
• equal to

A ________________ is indicated by a color change, bubbles, or a change in temperature.

• phase change
• physical change
• chemical change

The amount of matter in a substance is ______________

• mass
• volume
• temperature

A ________________ chemical equation has the same number of atoms for each reactant and product.

• complete
• balanced
• unbalanced

Melting ice and cutting paper are examples of ___________________

• chemical changes
• physical changes
• phase changes

NaCl and FeSO₄ are examples of _______________.

• coefficients
• compounds
• mixtures

The "2" in H₂O and the "3" in CaCO₃ are examples of _____________________

• subscripts
• coefficients
• exponents

A chemical change always _____________________

• releases heat
• absorbs heat
• forms a new substance

Is the equation below balanced?

• Yes
• No

Is the equation below balanced?

• Yes
• No