Chemistry Review, Part 1!

Front

What is a physical change?

Back

A physical change means that no new substance is produced and its identity stays the same.

Front

What is matter?

Back

Anything that has volume and mass.

Front

What is mass?

Back

The amount of matter an object has, measured in grams (g) or kilograms (kg).

Front

What is volume?

Back

The amount of space that a substance or object occupies, measured in milliliters (mL) or liters (L).

Front

What do we call two or more atoms of elements that join together?

Back

Molecules.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What is density?

Back

Density is the mass of an object divided by its volume, often expressed in g/mL or kg/L.

Front

What is an example of a physical change?

Back

Melting ice is a physical change because it changes from solid to liquid without forming a new substance.

Front

What is a chemical change?

Back

A chemical change occurs when a substance transforms into a different substance, producing new materials.

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.