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Chemical pretest Flashcards | StudBud
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Chemical pretest
Chemical pretest
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year 9 revision test
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
Chemical elements:
solid /liquid
solids only
solid/liquid/gases
all gases
2
The smallest particle of water with the formula H
2
O is called:
Particle
molecule
ion
atom
3
The element that makes up most of the mass of your body is:
Oxygen
Carbon
Sulfur
Hydrogen
4
Which of these things is an element?
Air
B water
oxygen
salt
5
The smallest part of an element is called
Atom
molecule
Cells
particle
6
A compound is
made of 2 or more elements joined
only one kind of element
Only 1 kind of atom
made of different molecules
7
Which of these changes is a chemical reaction?
Boiling water
Butter melting
adding ice to a drink
frying an egg
8
An element is something that
are easily split
contains only 1 kind of atom
cannot be split up in a chemical reaction
a mix of atoms and compounds
9
Chemistry is important because
You can make medicines
Its about matter and everything is matter
You can blow stuff up
My teacher said so!
10
If 2 liquids were mixed together .Which 1 would
not
show that a chemical reaction had happened?
Liquids floated on top of each other
gas given off
change in temp
Change in colour
11
The substances that you get at the end of a chemical reaction are called:
waste materials
products
gases
reactants
12
The number of chemical elements in the world is
100
1000
40
4
13
The chemical symbol for Calcium is
C
Cm
Co
Ca
14
The substances that you put in at the start of a chemical reaction are called:
Reactants
Additives
Chemicals
Solids
15
Where are metallic elements found in the Periodic Table?
Top 2 rows
Bottom 2 rows
Left hand side
Right hand side
