Science Midterm: Chapter 2

Front

What is the definition of matter?

Back

Something that has mass and volume.

Front

What is the law of conservation of matter?

Back

Matter cannot be created nor destroyed.

Front

What is energy?

Back

The ability to do work.

Front

What are atoms?

Back

The smallest building block of matter.

Front

What is the mass number?

Back

Protons + Neutrons.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object; weight is the force exerted by gravity on that object.