Atoms

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.

An electron has a _________ charge

• positive

• neutral

• negative

• massive

A neutron has _________ charge or is ________.

• negative ... neutral

• positive .... neutral

• no .... negative

• no ... neutral

The number of protons in an atom is called the .....

• Mass

• Atomic Number

• Nucleus

• Orbital

The mass number of an atom is the mass of ______ + _____

• protons + neutrons

• protons + electrons

• neutrons + nucleus

• protons + nucleus

The atomic mass is the

• number of protons and neutrons inside the nucleus

• number or electrons or protons

• number of protons, neutrons and electrons