Unit 2 Review (1/2)

Front

What type of changes do not change a substance chemically?

Back

Physical changes do not change a substance chemically. They often change more than one property.

Front

What is everything that we see, touch, smell, and feel, also known as anything that has mass?

Back

Matter is everything that we see, touch, smell, and feel; it is anything that has mass.

Front

What is the smallest unit of matter?

Back

The smallest unit of matter is an Atom.

Front

What are density, volume, and mass classified as?

Back

Density, volume, and mass are classified as Physical Properties.

Front

What two particles are found in the center of the atom, in a place called the nucleus?

Back

The protons and neutrons are found in the center of the atom, in a place called the nucleus.

Front

What is the term for a change that results in the formation of new chemical substances?

Back

A chemical change results in the formation of new chemical substances.

Front

What is the term for a change that affects one or more physical properties of a substance without altering its chemical composition?

Back

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

Front

What is the definition of mass?

Back

Mass is a measure of the amount of matter in an object, typically measured in grams or kilograms.

Front

What is the definition of volume?

Back

Volume is the amount of space that a substance or object occupies, typically measured in liters or cubic centimeters.

Front

What is the definition of density?

Back

Density is the mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).