Chem

HideShow resource information
What are in a Nucleus of a Atom?
Neutrons and protons
1 of 22
What charge does a proton have? What charge has a neutron got? What charge does a electron have?
Proton- positive Neutron- not charged Electron- negative charge
2 of 22
What is the mass number of a atom?
The number of protons and neutrons
3 of 22
What are electrons and what do they do?
Electrons are tiny negatively charged particles that move around the nucleus.
4 of 22
Why does a atom have no overall charge?
Because the number of protons is equal to the number of electrons and their charges are equal and opposite(proton +1 and electron -1
5 of 22
How do you work out the number of protons?
Atomic number
6 of 22
How do you work out the number of electrons?
number of protons
7 of 22
How do you work out the number of neutrons?
mass number-atomic number.
8 of 22
What happens when different elements combine?
They form compounds.
9 of 22
Metal only?
Metalic
10 of 22
Metal and Non Metal?
Ionic
11 of 22
Non Metal and Non Metal?
Covalent
12 of 22
How do we get Limestone?
Quarry it, blast it out.
13 of 22
Name the uses of Limestone?
To neutralise lakes and soils, building material, calcium oxide and cement.
14 of 22
How do you make concrete?
Mix cement with sand, aggregate and water.
15 of 22
Limestone is mainly......
Calcium carbonate(CaCo3)
16 of 22
What happens if you heat Limestone strongly?
It decomposes to make calcium oxide and carbon dioxide.
17 of 22
What happens when you add water to calcium oxide?
It reacts to make calcium hydroxide.
18 of 22
How do you make cement?
limestone is mixed with clay and heated strongly in a kiln.
19 of 22
How do you make mortar?
Mix cement sand and water.
20 of 22
What are the negative effects on quarrying limestone?
It leaves big holes in the ground. A lot of noise is made. Pollution is made due to the machinery. Kills wildlife homes
21 of 22
What are the advantages of quarrying limestone?
Can leave places for wildlife homes. Makes jobs for people. We need the limestone that's quarried.
22 of 22

Other cards in this set

Card 2

Front

What charge does a proton have? What charge has a neutron got? What charge does a electron have?

Back

Proton- positive Neutron- not charged Electron- negative charge

Card 3

Front

What is the mass number of a atom?

Back

Preview of the front of card 3

Card 4

Front

What are electrons and what do they do?

Back

Preview of the front of card 4

Card 5

Front

Why does a atom have no overall charge?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Atoms resources »