Atomic Structure & The Periodic Table

Question 1

How do you calculate relative atomic mass (Ar)?

Answer 1

(Isotope abundance x Isotope mass number) divided by sum of abundances of all the Isotopes

Question 2

What are compounds?

Answer 2

Substances formed from two or more elements, the atoms of each are in fixed proportions held together by chemical bonds.

Question 3

What is an isotope?

Answer 3

A different form of the same element which have the same number of protons but a different number of neutrons.

Question 4

Name two methods that a picture can be separated into its compounds and elements.

Answer 4

-Filtration
-Crystallisation
-Simple Distillation
-Fractional Distillation
-Chromatography

Question 5

Why must you use a pencil during Chromatography?

Answer 5

Pencil marks are insoluble and won’t dissolve in the solvent.

Question 6

Isotopes have the same Atomic or Mass Number?

Answer 6

Atomic number is the same, Mass number is different.

Question 7

Define what an element is.

Answer 7

A substance only containing atoms with the same number of protons.

Question 8

What will happen if any of the dyes in the ink are insoluble in the solvent?

Answer 8

They will stay on the baseline.

Question 9

In Nanometres, how big is the radius of an atom?

Answer 9

0.1 Nanometres

Question 10

What does the atomic number tell us?

Answer 10

How many protons there are.

Question 11

Filtration is used if the product is an ….

Answer 11

Insoluble solid.

Question 12

What shape is the filter paper folded in?

Answer 12

Cone

Question 13

Distillation is used to separate which contain..

Answer 13

Liquids

Question 14

Compounds are represented by …

Answer 14

Formulas

Question 15

What does the mass number all us?

Answer 15

The total number of protons and neutrons in the atom.

Question 16

What are the two types of distillation?

Answer 16

Simple & Fractional

Question 17

What colour poisonous gas is Fluorine?

Answer 17

Yellow

Question 18

State properties of the transition metals.

Answer 18

Very dense, shiny and strong

Question 19

Name three alkali metals.

Answer 19

-Lithium
-Sodium
-Potassium
-Rubidium
-Caesium
-Francium

Question 20

What did John Dalton describe atoms as?

Answer 20

Solid Spheres

Question 21

Fill in the blanks. J J Thompson measured …. & …. which showed atoms were smaller than Spheres.

Answer 21

Charge & Mass

Question 22

What did the plum pudding model show?

Answer 22

The atom as a ball of positive charge with electrons stuck in it.

Question 23

How we’re Alpha particle scattering experiments conducted?

Answer 23

By firing positively charged alpha particles at an extremely thin sheet of gold.

Question 24

As you go down group1, are the melting and boiling points increasing or decreasing?

Answer 24

Decreasing

Question 25

A metal oxide is formed when which 2 things react?

Answer 25

Group 1 element + oxygen

Question 26

As you go down group 7, does reactivity increase or decrease?

Answer 26

Decrease

Question 27

Fill the Gap: As you go down group 7, the halogens become ..... reactive.

Answer 27

Less

Question 28

In group 1, the elements react MORE or LESS vigorously as you go down the group?

Answer 28

More

Question 29

Name one way that a soluble salt from a solution.

Answer 29

Evaporation & Crystallisation

Question 30

Fill the gap: Metals have a ......... melting and boiling point.

Answer 30

High

Question 31

Transition metals are good .........

Answer 31

Catalysts

Question 32

Which group are Alkali metals in?

Answer 32

Group 1

Question 33

What was the new theory that J J Thompson created?

Answer 33

The plum pudding model.

Question 34

A you go down group 7, they have HIGHER or LOWER melting and boiling points?

Answer 34

Higher

Question 35

Fill in the blanks. J J Thompson measured .... & .... which showed atoms were smaller than Spheres.

Answer 35

Charge & Mass

Question 36

Name a difference between a Mixture and a Compound.

Answer 36

There is no chemical bond between pictures w\but there is in compounds.

Question 37

What ions do group1 have?

Answer 37

+1

Question 38

Fill the Gap: As you go down group1, there is an .......... in reactivity

Answer 38

Increase

Question 39

Define Malleable.

Answer 39

Can be bent or hammered into different shapes

Question 40

Why should you place a lid on top of the container?

Answer 40

To stop the solvent from evaporating.

Question 41

Fill the Gap: When group 1 elements react with water, they produce ......... gas

Answer 41

Hydrogen

Question 42

What are group 7 elements known as?

Answer 42

The halogens

Question 43

How did Dmitiri Mendeleev order elements in his version of the periodic table?

Answer 43

Order of atomic weight

Question 44

The halogens form 1- ions called...

Answer 44

Halides

Question 45

What colour poisonous gas is Chlorine?

Answer 45

Dense Green

Question 46

What colour poisonous gas is Bromine?

Answer 46

Red-brown

Question 47

Who conducted the Alpha particle scattering experiments?

Answer 47

Ernest Rutherford.

Question 48

What colour poisonous gas is Iodine?

Answer 48

Purple

Question 49

Group 1 metals react vigorously when heated in chlorine gas to form...

Answer 49

White metal chloride salts

Question 50

Group 0 elements are known as?

Answer 50

Noble Gases

Question 51

As you go down group 0, boiling points increase. True or False?

Answer 51

True