Revision Quiz

Question 1

what is matter

Answer 1

everything around us that has mass/occupies space

Question 2

3 subatomic particles

Answer 2

protons
electrons
neutrons

Question 3

chemical symbol for potassium

Answer 3

K

Question 4

which subatomic particle has a mass of 1 and a positive charge

Answer 4

proton

Question 5

what does the atomic no tell us

Answer 5

no of protons & electrons

Question 6

how many neutrons does a hydrogen atom have

Answer 6

none

Question 7

what happens in oxidation

Answer 7

electron is lost

Question 8

how does an antioxidant work

Answer 8

donate electrons to free radicals converting them into harmless molecules

Question 9

2 types bonding

Answer 9

electrovalence

covalent

Question 10

what causes polar bond

Answer 10

bond between electro positive and negative element

Question 11

ex of hydrophilic molecule

Answer 11

alcohol (polar bond)

Question 12

what is an acid

Answer 12

substance that releases ^ concentration of Hydrogen ions into a solution

Question 13

what is formed when an acid and base react together

Answer 13

salt + water

Question 14

4 states of matter

Answer 14

liquid
solid
gas
plasma

Question 15

chemical reaction that releases heat

Answer 15

exothermic

Question 16

what is the activation energy

Answer 16

min temp req for a particular reaction

Question 17

how does a catalyst work

Answer 17

speeds reaction by lowering activation energy

Question 18

what is the name of a reaction where water is formed as a waste product

Answer 18

dehydration synthesis

Question 19

living things are all based on molecules made of

Answer 19

carbon

Question 20

which functional group can act as a weak base

Answer 20

amine