Atomic Theory

Question 1

What’s an atom?

Answer 1

The simpest form of matter that can take part in a chemical reaction. They make up everything.

Question 2

What’s a proton?

Answer 2

A positively charged particle found in the nucleus of an atom. They determine the element the atom is.

Question 3

What’s a neutron

Answer 3

An uncharged particle found in the nucleus of an atom. It contributes to the atomic mass.

Question 4

What’s an electron?

Answer 4

Negatively charged particles that orbit the nuclei of atoms. They determine the reactivity of an atom.

Question 5

What’s a photon?

Answer 5

Packet of light energy in the form of particles or waves (related to gamma decay).

Question 6

What’s an ion?

Answer 6

An atom with a positive or negative charge.

Question 7

What’s an isotope

Answer 7

Atoms of any element that have a different amount of particles (protons and neutrons) in it’s nucleus.

Question 8

What is group 1 called?

Answer 8

Alkali Metals

Question 9

What’s group 17/7 called?

Answer 9

Halogens

Question 10

What’s group 18/8 called?

Answer 10

Noble gases

Question 11

4-12 groups are called…

Answer 11

Transition metals

Question 12

What are most elements

Answer 12

Metals

Question 13

What types of elements are there?

Answer 13

Metals, metalloids, non-metals

Question 14

What’s group 2?

Answer 14

Alkaline-earth metals

Question 15

Where are halogens?

Answer 15

Group 7/17

Question 16

Where are noble gases?

Answer 16

Group 8/18

Question 17

Whats atomic number?

Answer 17

The number of protons in an atom. It is arranged from smallest to largest on the periodic table - and it determines the element.

Question 18

Groups are vertical, so what do you call the horizontals rows?

Answer 18

Periods.