Atomic Structures

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

Element

Answer 3

made up of only one kind of atom

Question 4

Compound

Answer 4

Made up of at least two different atoms chemically bonded together

Question 5

Mixture

Answer 5

Made up of elements, compounds of both that are separated as the different substances are not bonded together

Question 6

Nucleus

Answer 6

Has the most mass of the atom. Located in the center. Made of neutrons and protons

Question 7

Protons

Answer 7

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 8

Neutrons

Answer 8

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

Question 9

Electrons

Answer 9

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

Question 10

Electron configuration

Answer 10

Electrons fill the shells from the nearest to the nucleus, out. Each shell has a limited number of electrons. First shell - 2 electrons. Second 8, Third 8
The more shells, the more energy

Question 11

Isotope

Answer 11

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

Question 12

Groups

Answer 12

Vertical columns. Elements in each group have similar characteristics. Group number matches the number of electrons

Question 13

Period

Answer 13

Horizontal rows. The period number matches the number of shells

Question 14

Ions

Answer 14

a positively or negatively charged particle(atom). Atoms lose or gain electrons so that they have a full outer shell