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Chemistry

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Questions on chemistry basics and about the periodic table.

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Questions 10

Answers

1
What is a chemical reaction?
Everything that reacts to chemicals.
A change to something to produce a new chemical.
The smallest type of matter in the world.
A reaction between an acid and a base.
2
What type of element is oxygen?
Non-metal
Actinides
Nobel gas
Alkali metal
3
What is an element?
Consists of different types of compounds
Something that consists of two or more atoms.
A single atoms that is uniform.
Somethings hing that has a bitter taste.
4
What atomic number is helium?
7
2
5
9
5
What is an atom?
Mixture of compounds
Corrosive substances
The result of a chemical reaction
Smallest unit of matter
6
What is a heterogenous?
A mixture that can be seen with all its different particles.
Things that can't be broken down.
Things that can only be broken down physically.
The chemical reaction between an acid and a base.
7
What are the vertical rows on the periodic table called?
Groups
Periods
Elements
Actinides
8
What is the element symbol for Lead?
Lp
L
Pb
Le
9
What are the horizontal rows on the periodic table called?
Periods
Groups
Elements
Actinides
10
What are acids?
Neutralisation
Corrosive substances
Smallest matter
Something that can't be broken down