Unit 1 - Part 2: Lesson 2 - Property Changes Chemical Reactions

Front

What are the products formed when vinegar (CH3COOH) reacts with baking soda (NaHCO3)?

Back

Sodium acetate, water, and carbon dioxide.

Front

What type of change occurs when water is heated and turns into steam?

Back

A physical change.

Front

What happens to atoms during a chemical reaction?

Back

Atoms are rearranged.

Front

What is true about the number of atoms in a chemical reaction?

Back

Atoms are rearranged but their number stays the same.

Front

What is an example of a compound?

Back

CO2.

Front

Define a chemical change.

Back

A process where substances combine or break apart to form new substances.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.