Periodic Table

Front

What is the charge of an atom with 5 protons, 4 electrons, and 4 neutrons?

Back

Positive

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances, e.g., rusting of iron.

Front

Which part of an atom has a positive charge?

Back

Proton

Front

What does it mean for mass to be conserved in a chemical reaction?

Back

The amount of atoms are equal before and after the reaction.

Front

What is an element?

Back

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

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is the nucleus of an atom?

Back

The central part of an atom that contains protons and neutrons.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus and are involved in chemical bonding.

Front

How do you identify a chemical change?

Back

Look for signs such as color change, gas production, or formation of a precipitate.