ATOMIC STRUCTURE AND ISOTOPES

Question 1

Proton and electron charges are

Answer 1

Balanced . Meaning they are equal

Question 2

Relative charge of a neutron

Answer 2

0

Question 3

Relative mass of proton

Answer 3

1

Question 4

Realsatire mass of neutron

Answer 4

1

Question 5

Relative mass of electron

Answer 5

1/1836

Question 6

Atomic number(Z) is the

Answer 6

Amount of protons/Electrons at the top of an element

Question 7

Isotopes are

Answer 7

The same elements with different numbers of neutrons but with the same atomic number

Question 8

Mass number (A) is

Answer 8

The number of protons + neutrons

Question 9

Different isotopes of the same elements have

Answer 9

The same number of electrons

Question 10

Ion is a

Answer 10

Charged particle

Question 11

Positive ions / Cations

Answer 11

OVERALL POSITIVE CHARGE

Question 12

Negative ions / Anions

Answer 12

OVERALL NEGATIVE CHARGE

Question 13

Group 1 has

Answer 13

+1 ions

Question 14

Group 2 has

Answer 14

+2 ions

Question 15

Group 3 has

Answer 15

+3 ions

Question 16

Group 5 has

Answer 16

-3 ions

Question 17

Group 6 has

Answer 17

-2 ions

Question 18

Group 7 has

Answer 18

-1 ions

Question 19

Relative isotopic mass

Answer 19

The mass compared with 1/12th mass of carbon 12

Question 20

Relative atomic mass

Answer 20

Weighted mean mass compared with 1/12th mass of carbon-12

Question 21

Bohr,s Model

Answer 21

Small dense nucleus with electrons orbiting around the nucleus

Question 22

Relative molecular mass (Mr)

Answer 22

The mass of a simple molecule

Question 23

Ionic compound

Answer 23

Compound made of oppositely charged ions that’s are held together by electrostatic forces

Question 24

Different isotopes of the same elements have the

Answer 24

same reaction as they have the same number of electrons and neutrons do not affect chemical reactions

Question 25

Heavy water (D20) is used to

Answer 25

Control nuclear processes

Question 26

Cations are

Answer 26

+ve

Question 27

Anions are

Answer 27

-ve

Question 28

Binary compound

Answer 28

contains 2 elemnts only

Question 29

Polyatomic ions

Answer 29

an ion with more than one element bonded together

Question 30

ammonium

Answer 30

NH4+

Question 31

Manganate

Answer 31

MNO4-

Question 32

Hydroxide

Answer 32

OH-

Question 33

Hydrogencarbonate

Answer 33

HCO3-

Question 34

Nitrate

Answer 34

NO3-

Question 35

Nitrite

Answer 35

NO2-

Question 36

Sulphate

Answer 36

SO4²-

Question 37

Sulphite

Answer 37

SO3²-

Question 38

Dichromate

Answer 38

Cr207²

Question 39

Phosphate

Answer 39

PO4³-

Question 40

Diatomic molecules

Answer 40

molecules that remain as pairs

Question 41

Molecular formula

Answer 41

Number of atoms of each element in a molecule

Question 42

Empirical formula

Answer 42

Simplest whole number ratio of atoms of each element in a compound

Question 43

empirical formula is important for

Answer 43

giant crystalline structures

Question 44

Relative formula mass

Answer 44

Compares mass formula with that of carbon 12

Question 45

A mass spectrometer

Answer 45

determines the mass number and abundance of a an isotope

Question 46

The uses of mass spectometry (3)

Answer 46

!. used to identify unkown compounds 2. to find the relative abundance for each isotope abundance 3. determine structural information

Question 47

How does a mass sectrometer work

Answer 47

1. the sample is ionised 2. they pass through the apparatus and are seperated according to charge ratio 3. a computer analyses the data and produces a mass spectrum

Question 48

Metals lose electrons to

Answer 48

form positive ions

Question 49

Non-metals gain electrons to form

Answer 49

Negative ions