Principles of chemistry 1c

Question 1

Atom

Answer 1

A particle that can’t be broken down into smaller particles

Question 2

Molecule

Answer 2

Two or more atoms chemically joined together ( can be identical atoms or different ones)

Question 3

Protons

Answer 3

Protons are found in the nucleus of an atom. They have a positive charge (+1) and have the same mass as a neutron. It has a mass of 1

Question 4

Neutrons

Answer 4

It is in the nucleus, has a neutral charge (0). A mass of 1

Question 5

Electrons

Answer 5

In shells around the nucleus. A negative charge ( -1) and a mass of 1/1836. Are in constant motions within their orbit

Question 6

Atomic number

Answer 6

Number of protons

Question 7

Mass number

Answer 7

Number of protons + number of neutrons

Question 8

Isotope

Answer 8

Atoms of the same number of protons but different numbers of neutrons