Chemistry Revision

What is the valency of Magnesium
+4
-3
+2
-2
What is Beryllium's valency
+4
-4
-3
+1
When two or more atoms bond, what forms?
Compound
Mixture
Molecule
Nucleus
What element do all organic compounds contain
Pottasium
Carbon
Helium
Oxygen
To become an ion, what has to happen?
The atom has to lose or gain electrons
The atom has to lose or gain a neutron
The atom needs same number of electrons and protons
The atom has to bond with helium
The periodic table is organized by what?
Size
Alphabetically
Atomic number
Number of neutrons
What kind of solvent is water known as?
Universal
Basic
Special
Rare
How many oxygen molecule are required to make water
1
3
2
8
Gold is an example of a ______.
Molecule
Neutron
Mixture
Element
A liquid has__________type of molecular structure
A defined volume, but not a defined shape
A definite shape, but no defined volume
A definite volume and shape
No defined volume or shape
0
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