CT2

Question 1

What number is the Atomic Mass?

Answer 1

Largest number

Question 2

What does the Atomic Mass hold?

Answer 2

Protons+Neutron

Question 3

What is the Atomic number?

Answer 3

Smallest number

Question 4

What does the Atomic number hold?

Answer 4

Electrons = Protons

Question 5

What charge does a proton have?

Answer 5

+1

Question 6

What charge does an Electron have?

Answer 6

-1

Question 7

What charge does a neutron have?

Answer 7

0

Question 8

What is the mass of a proton?

Answer 8

1

Question 9

What is the mass of an electron?

Answer 9

0

Question 10

What is the mass of a neutron?

Answer 10

1

Question 11

What is the location of a proton?

Answer 11

Nucleus

Question 12

What is the location of an electron?

Answer 12

Shells

Question 13

What is the location of a neutron?

Answer 13

Nucleus

Question 14

What is an isotope?

Answer 14

Each of two or more forms of the same element that contain the same number of protons and electrons but have differet number of neutrons

Question 15

What is the relative atomic mass?

Answer 15

Is an average of the atomic mass of all the different isotopes in a sample with each isotope’s contribution to the average determined by how big a fraction of the sample it makes up

Question 16

What does RAM stand for?

Answer 16

Relative Atomic Mass

Question 17

Why does Lithium have a smaller reaction?

Answer 17

The distance between the nucleus and the outer shell electron is shorter than the other Alkali Metals. This makes the outer electron be less exposed to be let go of at a speed.

Question 18

How do you calculate the relative atomic mass?

Answer 18

100

Question 19

What does the particle model explain?

Answer 19

State changes in a substance in terms of the arrangement, movement and energy stored in its particles.

Question 20

Can physical changes be reversed?

Answer 20

Yes

Question 21

Gas - Solid

Answer 21

Deposition

Question 22

Solid - Gas

Answer 22

Sublimation

Question 23

Gas - Liquid

Answer 23

Condensing

Question 24

Liquid - Solid

Answer 24

Freezing

Question 25

Solid - Liquid

Answer 25

Melting

Question 26

Liquid - Gas

Answer 26

Evaporation / boiling

Question 27

What are attraction forces?

Answer 27

Weak forces that occur between particles during condensing, and some in freezing.

Question 28

What is the first thing on the heating curve?

Answer 28

Solid

Question 29

What is the second thing on the heating curve?

Answer 29

Melting 0 degrees

Question 30

What is the third thing on the heating curve?

Answer 30

Liquid

Question 31

What is the fourth thing on the heating curve?

Answer 31

Evaporation

Question 32

What is the fifth thing on the heating curve?

Answer 32

Gas

Question 33

How do you know if the substance is a solid?

Answer 33

The temperature is below the melting point

Question 34

How do you know if the substance is a liquid?

Answer 34

The temperature is between the melting point and boiling point

Question 35

How do you know if the substance is a gas?

Answer 35

The temperature is above the boiling point

Question 36

What is a pure substance?

Answer 36

Has the fixed composition in all its parts and so we can't separate it into other substances using physical methods.

Question 37

What do mixtures contain?

Answer 37

Elements and/or compounds that are not chemically joined. You can use physical processes to separate mixtures into different substances.

Question 38

What do mixtures not have?

Answer 38

A fixed composition

Question 39

What happens when a solid melts?

Answer 39

Its particles gain enough energy to overcome the weak forces of attraction between them.

Question 40

What number on the scale determines if the substance is pure or impure?

Answer 40

1000

Question 41

What does simple distillation separate?

Answer 41

ethanol (found in alcoholic drinks) and pure water

Question 42

What does fractional distillation separate?

Answer 42

Four different alcohols with different boiling points

Question 43

What does paper chromatography separate?

Answer 43

Different dyes dissolved in water

Question 44

What does filtration separate?

Answer 44

sand and salt water

Question 45

What does crystallisation separate?

Answer 45

sodium chloride (salt) dissolved in water

Question 46

What equipment is used with distillation?

Answer 46

- Thermometre - Beaker - Tripod - Bunsen burner - Heat proof mat - Clamp stand - Test tube - Boiling tube - Delivery tube - (condenser)

Question 47

What is the first step to distillation?

Answer 47

Heat (energy)

Question 48

What is the second step to distillation?

Answer 48

Evaporate (change of state)

Question 49

What is the third step to distillation?

Answer 49

Solvent (water in ink)

Question 50

What is the fourth step to distillation?

Answer 50

Ice - cools gas to a liquid CONDENSATION

Question 51

What does Rf mean?

Answer 51

Retention factor (no unit)(more than 1=wrong)

Question 52

What is the formula for Rf?

Answer 52

Distance moved by spot / distance moved by the solvent

Question 53

What is a solute?

Answer 53

the minor component in a solution, dissolved in the solvent. SOLID

Question 54

What is a solvent?

Answer 54

able to dissolve other substances LIQUID

Question 55

How are elements arranged on the periodic table?

Answer 55

Increasing atomic number

Question 56

What are the vertical columns called?

Answer 56

Groups

Question 57

What are the horizontal columns called?

Answer 57

Periods

Question 58

What is group 0 called?

Answer 58

Nobel Gasses

Question 59

What is group 1 called?

Answer 59

Alkali metals

Question 60

How did Mendeleev arrange his periodic table (in the 1870)?

Answer 60

By arranging the elements in order of increasing atomic mass and grouping them by their similar properties.