671934
Questão 1
Responda
-
8
-
16
-
14
-
4
Questão 2
Questão
How many electrons are in the outer shell of Magnesium (Mg)?
Responda
-
1
-
8
-
2
-
4
Questão 3
Questão
A compound is two or more atoms that have a chemical bond. It is usually hard to separate them once this bond has been formed.
Responda
- True
- False
Questão 4
Questão
Atoms are lost in chemical reactions.
Responda
- True
- False
Questão 5
Questão
Limestone can be used for many different things. Tick all the boxes, limestone is not used to make.
Image:
imagesCA73WBZR (image/jpg)
Responda
-
Buildings
-
Glass
-
Water bottles
-
Computers
-
Pavements
Questão 6
Questão
Making things from limestone causes pollution?
Responda
- True
- False
Questão 7
Questão
Nearly all of the elements on the periodic table are non-metals.
Responda
- True
- False
Questão 8
Questão
What is commonly used to extract Iron from it's ore?
Responda
-
Blast Furnace
-
Electrolysis
-
A hot catalyst
Questão 9
Questão
What method is used to separate crude oil into different substances?
Responda
-
Fractional Distillation
-
Blast Furnace
Questão 10
Questão
kerosene is used to make which product?
Responda
-
Jet fuel
-
Car fuel
-
Train fuel
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