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Year 8 - Chemical World Flashcards | StudBud
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Year 8 - Chemical World
Year 8 - Chemical World
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1
The chemical symbol represents how many atoms of an element?
two
one
four
three
2
LAST QUESTION! Which year 8 Science class is the best?
8R
8H
8S
8K
3
The very first version of the periodic table of elements was published by:
ancient Greek philosopher Aristotle
TheInternational Union of Pure and Applied Chemistry (IUPAC)
TheAmerican Institute of Physics
Mendeleev who classified the 63 known elements of the time
4
What gas did he inhale before singing?
Oxygen
Nitrogen
Hydrogen
Helium
5
What is NOT a use for Nitrogen?
Explosives
Fertiliser
Bleach
Making advertising signs
6
How many different types of atoms make up this particle of this substance?
two
one
three
four
7
Mixtures are?
examples of pure substances
another name for a solution
chemically unstable
made up of more than one type of particle
8
_________ is the ability to be bent or hammered into shapes
Hardness
Solubility
Ductility
Malleability
9
What is the atomic number for Calcium?
16
20
23
5
10
In chemistry, the smallest particle of a pure substance is called:
A solution
An atom
A colloid
An element
11
Why can we see so many substances around us if particles are not visible to our eyes? Because:
substances are not always made of particles
Trick question: individual particles are visible to our eyes
many substances are made of billions of particles
many substances are actually mixtures and we see mixtures
12
How might you test the electrical conductivity of an element?
Heat it using a bunsen burner
Put a battery on the element
Set up a simple circuit
Use glass paper to shine the element
13
Mercury is a metal. What is its state at room temperature?
Solid
Liquid
Gas
Doesn't exist at room temperature
14
The ________ table is a chart that organises most of the known elements.
Coffee
Periodic
Pool
Spiral
15
The following element's name is
Potassium
Krypton
Copper
Iron
