Elements, Compounds and reactions

Which part of an atom is POSITIVELY charged?

• protons
• neutrons
• electrons
• atoms

Which part of an atom is NEGATIVELY charged?

• protons

• neutrons

• electrons

• atoms

Which part of an atom has no charge?

• protons
• neutrons
• electrons
• atoms

What is at the center of every atom?

• An electron
• A compound
• A nucleus
• A molecule

Which two particles are found in the nucleus of an atom?

• protons and electrons

• protons and neutrons

• molecules and compounds

• neutrons and electrons

Which of the following determines the type of element an atom makes? (who is the fingerprint of an atom?)

• The size of the nucleus

• The number of protons

• How much an atom weighs

• The number of neutrons

A molecule is

• two or more atoms chemically stuck together

• one type of atom just hanging out together

• smaller than an atom

What do we call a chemical substance made up of 2 or more different types of atoms chemically stuck (bonded) together? Check all that apply.

• atom

• molecule

• element

• compound

Which word best describes what is in the picture?

• atom

• element

• compound

• mixture

Check all options that describe the picture.

• atom

• molelcule

• element

• compound