Unit 1 study guide: chemical reactions

Front

What does the conservation of mass state?

Back

The mass of the starting system must equal the mass of the ending system in a closed system.

Front

What is a product in a chemical reaction?

Back

Substance(s) that are formed at the end of a chemical reaction.

Front

What does it mean if a substance is soluble?

Back

It means that the substance can dissolve in a particular solvent.

Front

What is a reactant?

Back

Substance(s) that are present at the beginning of a chemical reaction.

Front

What is an example of a chemical change?

Back

A bath bomb fizzing in water.

Front

What is the formula for propane?

Back

Front

What happens to gas bubbles during a chemical reaction?

Back

They have mass, and when they escape, the total mass of the system decreases.

Front

What is an example of an insoluble substance?

Back

Sand in water.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the substance's chemical composition, while a chemical change does.

Front

What is a mixture?

Back

A combination of two or more substances that retain their individual properties.