SA1 Review Chmistry

Neutral charge (Zero)particle, larger than protons and are located inside the nucleus.

• Protons

• Electrons

• Neutrons

• Nucleons

Among the three subatomic particles, which is the heaviest or the most massive?

• Protons

• Electrons

• Neutrons

• Nucleons

A negatively charged particle (-). It is extremely small (about 1 /2000 mass of protons or neutrons).

• Protons

• Electrons

• Neutrons

• Nucleons

Also, now as Nuclide. These are atoms of the same element with different number with neutrons.

• Isotopes

• Atoms Mass

• Nucleons

• Neutron

A weighted average mass of an atom based on a relative natural abundance of that element’s isotopes.

• Atomic Number

• Atomic Symbol

• Atomic Mass

• Atomic Protons

Atomic number equals to

• number of protons and neutrons

• number of protons or electrons

• number of protons + electrons

• number of protons + neutrons

Atomic mass equals to

• number of protons and neutrons

• number of protons or electrons

• number of protons + electrons

• number of protons + neutrons

What is the atomic number of Br (Bromine)?

• 15

• 25

• 35

• 45

What is the mass number of Br (Bromine)?

• 15

• 25

• 35

• 45

How many are the number of protons of Br (Bromine)?

• 15

• 25

• 35

• 45