Combined Chemistry - C1 Atomic Structure and Periodic Table

Question 1

What is the name of the smallest part of an element that makes up all substances?

Answer 1

An atom

Question 2

What do all chemical symbols,

e.g. Na and O, have to start with?

Answer 2

A capital letter

Question 3

Approximately how many different elements are there?

Answer 3

There are around 100 different elements.

Question 4

What is a compound?

Answer 4

• Two or more elements
• Chemically bonded

Question 5

What is a mixture?

Answer 5

Two or more elements, or compounds, that are not chemically bonded together.

Question 6

What separation process is shown in the diagram?

Answer 6

Crystallisation

Question 7

What type of separation process is shown in the diagram?

Answer 7

Filtration

Question 8

What type of separation process is shown in the diagram?

Answer 8

Distillation

Question 9

What type of separation process is shown in the diagram?

Answer 9

Fractional Distillation

Question 10

What type of separation process is shown in the diagram?

Answer 10

Chromatography

Question 11

Why might a scientist decide to change or replace an existing model?

Answer 11

New experimental evidence is put forward

Question 12

The discovery of what sub-atomic particle led to the plum pudding model of the atom?

Answer 12

The electron

Question 13

Can you correctly label the diagram of the plum pudding model below?

Answer 13

Question 14

Name the experiment shown in the picture

Answer 14

Alpha Particle Scattering Experiment

Question 15

What were the two major things the alpha scattering experiment told us about the atom?

Answer 15

• The mass was concentrated at the centre (the nucleus)
• The nucleus was positively charged.

Question 16

Who said the electrons orbit at specific distances?

Answer 16

Bohr

Question 17

What similarities are there between elements in the same group?

Answer 17

• Same number of electrons in outer shell
• Similar Properties

Question 18

Q. What are the columns in the Periodic Table called?

Answer 18

• Groups

Question 19

What are the names of the sub-atomic particles in the nucleus of the atom?

Answer 19

Protons and Neutrons

Question 20

Who discovered the neutron?

Answer 20

Chadwick

Question 21

What are the relative charges of the particles in an atom?

Answer 21

Question 22

What are the relative masses of the particles in an atom?

Answer 22

Question 23

Q. What is the charge on an atom?

Answer 23

• There is no overall charge on atom

Question 24

What is an isotope?

Answer 24

Atoms of the same element with a different number of neutrons.

Question 25

How were elements in the early periodic tables arranged?

Answer 25

By atomic weights

Question 26

Who designed a Periodic Table that left gaps for undiscovered elements?

Answer 26

Mendeleev

Question 27

What charge do non-metal ions (except Hydrogen) have?

Answer 27

Negative

Question 28

What charge do metal ions have?

Answer 28

Positive

Question 29

Q. Where are metals found on the Periodic Table? Q. Where are the non-metals on the Periodic Table?

Answer 29

* Metals are on the Left-Hand Side of the Periodic Table * Non-metals are on the Right-Hand Side of the Periodic Table

Question 30

What are the elements in Group 0 called?

Answer 30

Noble Gases

Question 31

Explain why noble gases are unreactive.

Answer 31

They have a full outer shell of electrons.

Question 32

How does the boiling point of noble gases change as you go down the group?

Answer 32

It increases

Question 33

What is the name given to the elements in Group 1 of the Periodic Table?

Answer 33

Alkali Metals

Question 34

What happens the the reactivity of alkali metals as you go down the group?

Answer 34

Reactivity Increases

Question 35

What are the elements in Group 7 of the Periodic Table called?

Answer 35

Halogens

Question 36

Which group of elements form molecules made up of pairs of atoms?

Answer 36

The Halogens (Group 7)

Question 37

Q. What happens to the melting and boiling points of Halogens as you go down the group? Q. What happens to the reactivity of the Halogens as you go down the group?

Answer 37

* Melting and boiling points increase * Reactivity decreases

Question 38

Q. What is the name for a reaction when a more reactive element takes the position of a less reactive element?

Answer 38

• Displacement Reaction

Question 39

Q. What are the rows in the Periodic Table Called?

Answer 39

• Periods

Question 40

Q. How are the elements in the Periodic Table arranged?

Answer 40

• Atomic (proton) number