Matter

Question 1

What charge is a proton

Answer 1

Positive

Question 2

What charge is neutron

Answer 2

Neutral

Question 3

What charge is an electron

Answer 3

Negative

Question 4

What is the position and mass of a proton

Answer 4

Nucleus, 1

Question 5

What is the position and mass of a neutron

Answer 5

Nucleus, 1

Question 6

What is the position and mass of a electron

Answer 6

Shell, 1/2000

Question 7

How many electrons does aluminium have

Answer 7

13

Question 8

What is the atomic number

Answer 8

The number of protons

Question 9

What is the mass number

Answer 9

Number of protons plus the amount of neutrons

Question 10

What’s an element

Answer 10

A substance made from one type of atom

Question 11

chemical symbols for hydrogen, aluminium, magnesium and sodium?

Answer 11

H, Al, Mg and Na

Question 12

What’s a atom?

Answer 12

The smallest part of an element that can exist on its own.

Question 13

What are the differences in atoms?

Answer 13

Atoms that make up an element are the same however atoms of a different element are different.

Question 14

Do atoms have the same properties as the element?

Answer 14

No, one atom by itself does not share the same properties. Atoms joined together do.

Question 15

What’s a compound?

Answer 15

Where two or more elements strongly join together.

Question 16

What’s a molecule?

Answer 16

A molecule is two or more atoms strongly joined together.

Question 17

What elements make up water?

Answer 17

Two hydrogen atoms and one oxygen atom

Question 18

What is a salt?

Answer 18

A salt is a scientific name for a compound of sodium and chlorine. Sodium chloride.

Question 19

What makes up carbon dioxide?

Answer 19

One carbon atom and two oxygen atoms.

Question 20

What’s the name for sulphur plus 3 oxygen atoms?

Answer 20

Sulphur trioxide.

Question 21

What’s the name for sodium plus chlorine?

Answer 21

Sodium chloride. If you add an element onto let’s say chlorine you take away the -ine and add -ide.

Question 22

Chemical formula for carbon dioxide and carbon monoxide?

Answer 22

CO2, CO

Question 23

What happens when there are more than two elements in a compound?

Answer 23

The third element tends to be a various number of oxygen atoms. This just means you change the the suffix into -ate (hydrogen being the exception). For example: copper sulphate

Question 24

Chemical formula for: sodium hydroxide, sodium nitrate, copper sulphate and calcium carbonate?

Answer 24

NaOH, NaNO3, CuSO4, CaCO3. In all these formulae there are three elements.

Question 25

What’s a polymer

Answer 25

A very lonk substance with repeated molecules. UwU

Question 26

Why do polythenes have high melting points?

Answer 26

Because there molecules are big.

Question 27

Name some natural polymers.

Answer 27

Wool, cotton, starch, rubber and grass.

Question 28

Name some synthetic polymers.

Answer 28

LDPE: molecules slide over each other, flexible, strong, used for carrier bags. HDPE: Strong, flexible, harder than LDPE, smooth, used for artificial knee joints.

Question 29

What are the columns in the periodic table?

Answer 29

The columns are called groups and they tell you what elements are similar to each other. Each group has different numbers to tell you how many electrons are on their atom’s shells. Their are of course some exceptions.

Question 30

What’s a row called in the periodic table?

Answer 30

The rows are called periods and they order and trend the elements in the table.

Question 31

Properties of group 1: | Lithium, sodium, potassium, rubidium, caesium, francium

Answer 31

- are called alkali metals - good conductors of heat and electricity - shiny when cut - both melting and boiling points decrease when going down the group - reactivity increases when going down the group - reactive well with water and group 7 - when react with water create hydrogen gas

Question 32

Properties of group 7: | Florine (gas), chlorine(gas), bromine(liquid), iodine(solid), astatine(solid)

Answer 32

- called halogens - aren’t good at conducting electricity - the melting and boiling point increases when going down the group - reactivity decreases when going down the group - react well with group 1 - the halogens at the top of the group displace ones at the bottom

Question 33

Properties of group 0: | Helium, Neon, Argon, Krypton, Xenon, Radon

Answer 33

- called noble gases - don’t conduct anything - melting and boiling points increase as you go down the group - unreactive - Don’t reactive with the other groups