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.

Question 19

What’s an ionic bond?

Answer 19

Force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. (donates) only between metals and non-metals.

Question 20

What are ionic compounds?

Answer 20

Compounds in which electrons are transferred from one atom to another are called ionic compounds. In this type of compound, electrons move between the atoms, rather than being shared. When atoms give up or accept electrons in this way, they become ions. Generally form between metals nonmetals.

Question 21

What’s a covalent bond?

Answer 21

A covalent bond is the force of attraction that holds together atoms and share valence electrons. The shared electrons are attracted both nuclei. Covalent bonds form only between atoms of nonmetals.

Question 22

What’s a covalent compound?

Answer 22

Covalent compounds contain two or more nonmetallic elements held together by covalent bonds.

Question 23

What are the inert gases?

Answer 23

Noble gases.