2.1 + 2.2 Practice Quiz (Nature of Matter and Water Properties)

The negatively charged particle in an atom is called the

• neutron

• proton

• electron

• ion

The smallest subatomic particle is called the

• neutron

• proton

• electron

• ion

The three particles that make up atoms are

• ions, isotopes, and electrons

• neutrons, isotopes, and electrons

• positives, negatives, and neutrals

• protons, neutrons, and electrons

Who coined the term, "atom?"

• Einstein

• Brown

• Democritus

• Finnegan

The nucleus of an atom is comprised of

• protons

• protons and electrons

• electrons

• protons and neutrons

A common phosphorus atom (P) has an atomic mass of 30.974 amu and an atomic number of 15, how many neutrons does it have?

• 15

• 16

• 30

• 31

A common Chlorine atom (Cl) has an atomic mass of 35.453 amu and an atomic number of 17, how many valence electrons does it have?

• 7

• 8

• 17

• 35

An isotope of Carbon 14 has 6 protons, how many neutrons does it have?

• 6

• 8

• 9

• 14

Ions are

• Atoms that have either gained or lost an electron

• Atoms that have either gained or lost a neutron

• Atoms that are sharing electrons with another atom

• Atoms that are sharing neutrons with another atom

Isotopes of the same atom have

• the same number of neutrons

• the same number of protons

• a different number of electrons

• a different number of ions