unit 1 review

Which of these is NOT found in the nucleus of an atom?

• neutrons

• protons

• atomic mass

• electrons

What is the electrical charge of the nucleus of an atom that has 11 protons, 12 neutrons, and 11 electrons?

• -11

• +12

• -12

• +11

An atom consists of 11 electrons, 12 neutrons, and a number of protons. Which information will be most helpful in determining the charge of the atom's nucleus?

• mass number

• conductivity

• physical properties

• chemical reactivity

Most of the volume (size) of an atom is occupied by --

• protons

• empty space

• neutrons

• the nucleus

Which subatomic particle(s) are located within the nucleus of an atom?

• electrons

• protons

• neutrons and electrons

• neutrons and protons

What subatomic particle(s) surround the nucleus of an atom?

• electrons

• neutrons

• protons and electrons

• neutrons and electrons

What subatomic particle has the least mass; less than 1 amu?

• neutron

• electron

• proton

• nucleuses

Which subatomic particles have approximately the same mass of 1 amu?

• electron and neutron

• electron and protron

• neutron and proton

• proton and neutrino

Which of the following correctly describes the electrical charges of subatomic particles?

• protons/positive; neutrons/negative; electrons/neutral

• protons/positive; neutrons/neutral; electrons/negative

• protons/neutral; neutrons/positive; electons/negative

• protons/negative; neutrons/neutral; electrons/negative

What subatomic particles are found in the nucleus of the atom and how does that contribute to the overall charge of the nucleus?

• neutrons and protons only with an overall negative charge

• neutrons and protons only with an overall positive charge

• neutrons and electrons only with an overall negative charge

• protons and electrons only with an overall neutral charge