chemistry yr 10 test 1

Question 1

what is the formula for n

Answer 1

n= N divded by 6.02 X 10 to the power of 23

Question 2

what is the formula for N

Answer 2

N= n(6.02 X 10 to the power of 23)

Question 3

what is the formula of M

Answer 3

all of the atomic weights of the elements present added together

Question 4

what is the formula of m

Answer 4

m=n X M

Question 5

what is M

Answer 5

molar mass of substance

Question 6

what is m

Answer 6

mass of substance

Question 7

what is N

Answer 7

number of particles

Question 8

what is n

Answer 8

number of moles

Question 9

what is the unit for n

Answer 9

mols

Question 10

what is the unit for M

Answer 10

gmol to the negative power of 1

Question 11

what is unit for m

Answer 11

g (grams)

Question 12

what is the unit for N

Answer 12

particles of (element name/names)

Question 13

what is an isotope

Answer 13

a type of element where it has the same amount of protons as an other elements but has a different amount of particles

Question 14

what is the purpose of bonding

Answer 14

for the elements involved to have a full valence shell

Question 15

what are the three types of bonding

Answer 15

ionic, covalent, metallic

Question 16

what two parts are used for an ionic bonding

Answer 16

metal + non-metal

Question 17

what two parts are used for covalent bonding

Answer 17

non-metal + non-metal

Question 18

what two parts are used for metallic bonding

Answer 18

metallic+ metallic

Question 19

what is a cation

Answer 19

an ion with a positive charge

Question 20

what is an anion

Answer 20

an ion with a negative charge

Question 21

what is an ion

Answer 21

an ion is the elements shown with their charges

Question 22

what is the structure of an atom

Answer 22

nucleus filled with protons and neutrons with electron shells surrounding with electrons drawn on them
2-8-8-8

Question 23

what is the formula for hydrogen carbonate

Answer 23

HCo3 (-) anion

Question 24

what is the formula for hydrogen sulfate

Answer 24

HSO4 (-) anion

Question 25

what is the formula for hydroxide

Answer 25

OH (-) anion

Question 26

formula for nitrate

Answer 26

NO3 (-) anion

Question 27

sulfate formula

Answer 27

SO2−4 (-) anion

Question 28

sulfite formula

Answer 28

SO3-2 (-) anion

Question 29

carbonate formula

Answer 29

CO3 (-) anion

Question 30

phosphate formula

Answer 30

PO4-3 (-) anion

Question 31

silver formula

Answer 31

Ag+ cation

Question 32

ammonium formula

Answer 32

NH4+ cation

Question 33

cobalt formula

Answer 33

CO +2 cation

Question 34

carbon dioxide formula

Answer 34

CO2

Question 35

sodium chloride formula

Answer 35

NaCl

Question 36

glucose formula

Answer 36

C6H12O6

Question 37

oxygen gas formula

Answer 37

O2

Question 38

nitrogen gas formula

Answer 38

N2

Question 39

nitric acid formula

Answer 39

NO3

Question 40

calcium carbonate formula

Answer 40

CaCO3

Question 41

hydrochloric acid formula

Answer 41

HCl

Question 42

sodium hydroxide formula

Answer 42

NaOH

Question 43

nitrogen dioxide formula

Answer 43

NO2

Question 44

sulphuric acid formula

Answer 44

H2SO4

Question 45

methane

Answer 45

CH4