Atoms

The positive particles of an atom are ___________.

• electrons

• protons

• neutrons

The center of an atom where its neutrons and protons are is called the _____________.

• nucleus

• electron cloud

• center

An atom is made up of protons, neutrons, and electrons.  Which is the smallest subatomic particle?

• Proton
• Neutron
• Electron
• Idontknowatron

Which is an electron?

• A
• B
• C

Atoms are made up of ________________

• energy

• electrons

• subatomic particles

• gasses

The subatomic particles that make up an atom.

• solid, liquid, gas

• electrons, protons, nucleus

• energy, protons, nucleus

• electrons, protons, neutrons

The following subatomic particles are in the nucleus.

• Protons and nucleus.

• Protons and neutrons.

• Protons and electrons

• Neutrons and electrons

__________ are negatively charged particles that are in the orbitals around the nucleus.

• protons

• nucleus

• neutrons

• electrons

Protons and Neutrons are more massive than electrons. Therefore, most of the _____ of the atom is in the ______.

• energy ..... proton

• nucleus .... electron

• properties ... orbital

• mass .... nucleus

A proton has a ___________ charge.

• positive

• negative

• neutral

• massive.