DMS Chemistry Final

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties. Example: human digestion.

Front

What is the Periodic Table of Elements?

Back

The Periodic Table is a chart that organizes all known elements by increasing atomic number, showing their relationships and properties.

Front

What are subatomic particles?

Back

Subatomic particles are the smaller particles that make up an atom, including protons, neutrons, and electrons.

Front

What is the charge of neutrons?

Back

Neutrons have no charge.

Front

What is density?

Back

Density is the mass of an object divided by its volume, usually expressed in g/cm³.

Front

How do you calculate density?

Back

Density = Mass / Volume.

Front

Where are reactants located in a chemical equation?

Back

Reactants are found on the left side of the arrow in a chemical equation.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Example: melting ice.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rusting of iron.

Front

What are the three main types of subatomic particles?

Back

The three main types of subatomic particles are protons (positive charge), neutrons (no charge), and electrons (negative charge).