Science - Chemistry (Atoms and Compounds)

Question 1

What are the 3 parts in an atom

Answer 1

Electron (negative charge)
Proton (positive charge)
Neutron (no charge)

Question 2

How to calculate the number of neutrons

Answer 2

Atomic mass minus the atomic number

Question 3

What are isotopes

Answer 3

Atoms with the atomic number but different atomic masses

Question 4

What are exothermic reactions

Answer 4

Where the reactants give out energy to water or air such as photosynthesis. The products have more energy than the reactants

Question 5

What are endothermic reactions

Answer 5

Where reactants gain energy from surroundings such as combustion. The products have less energy than the reactants

Question 6

What do metal atoms form

Answer 6

Cations (positive ions)

Question 7

What do nonmetal atoms form

Answer 7

Anions (negative ions)

Question 8

What are ionic compounds

Answer 8

When metals and non-metals react together to gain full valence shells

Question 9

Anion

Question 10

Atomic mass

Question 11

Atomic number

Question 12

Cation

Question 13

Covalent bond

Question 14

Electron configuration

Question 15

Element

Question 16

Ionic bond

Question 17

Ionic compound

Question 18

Isotopes

Question 19

Lewis diagram

Question 20

Metal elements

Question 21

Molecule

Question 22

Noble gases

Question 23

Nonmetal elements

Question 24

Nucleus

Question 25

Oxidation

Question 26

Proton

Question 27

Redox reaction

Question 28

Reduction

Question 29

Subatomic particles

Question 30

Valence electrons

Question 31

Valence shell