Atoms and Elements

A material that cannot be broken down into anything simpler by chemical reactions is an

• Gas

• Ingredient

• Element

• Solid

Name of the center of an atom

• Proton

• Nucleus

• Electron

• Neutron

Particles with more than one atom joined together

• Neutrons

• Solids

• Molecules

• Metalloids

A compound is made of ___ elements

• At least 2 of the same

• At least 3 different

• At least 2 different

• At least 3 of the same

Is salt a molecule or compound?

• Molecule

• Compound

What part of an atom has a positive charge?

• Proton

• Electron

• Neutron

Which part of an atom has a negative charge?

• Protons

• Electrons

• Neutrons

Which part of an atom has a neutral charge?

• Proton

• Electron

• Neutron

What is listed on the periodic table?

• States of matter

• Compounds

• Elements

• Molecules

There are only 45 elements on the periodic table.

• True

• False