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Chemical Change (Year 8) Flashcards | StudBud
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Chemical Change (Year 8)
Chemical Change (Year 8)
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1
What test is done to check for formation of hydrogen gas
Pop test
Bubble test
gas test
Flame test
2
Cooking a hard boiled egg involves what changes
Chemical only
Both chemical and physical
No change
Physical only
3
Changes of state is an example of physical change because
a liquid is different to a gas
it is reversible
melting chocolate is cooking not chemistry
no bonds are broken or created
4
Which statement about compounds is false
compounds are made up of 2 or more elements
Compounds can be molecules
Salt(NaCl) and water (H20) are compounds
Compounds are made up of one element
5
What company owns Porsche, Audi, and Lamborghini?
Subaru
BMW
Volkswagon
Fiat
6
The rate of a chemical reaction can be increased by
adding water
heating it
Cooling it
heating and then cooling it
7
Is chemical change the same as physical change?
No, because chemical change results in a new substance
Yes, chemical change can't happen without physical change
Yes, change is change
No, physical change results in a new substance
8
Melting chocolate is
chemical change
neither
a waste of good chocolate
physical change
9
What is a group of Pandas called?
Pride
Gang
Pack
Embarrassment
10
Anginophobia is a fear of what?
spiders
outdoors
heights
flowers
11
Water vapour changing to liquid water is an example of
freezing
condensation
melting
boiling
12
Burning involves what type of change?
chemical with the formation of oxygen
chemical with the formation of heat and gases
physical
heat
13
Ice changing into liquid water is an example of
freezing
melting
condensation
sublimination
14
What is the name given to a substance that speeds up a reaction but doesn't react
catalyst
enzyme
product
metal
15
When writing a chemical word equation
an arrow separates the reactants and products
products are on the right
reactants are on the left
Products are on the left
16
Subatomic particles are
protons and electrons
neutrons and electrons
Neutrons, protons, & electrons
nucleus, protons & electrons
17
The formation of a precipitate is
is evidence of chemical change only if it is yellow
Is the only form of evidence of chemical change
evidence of physical change only
One type of evidence that a chemical change has occured
18
What was Billie Eilish first song?
Ocean eyes👁
Bellyache
Bored 😐
You should see me in a crown 👑
19
A rusting nail is an example of
physical change
a slow chemical change
a fast chemical change
neither physical or chemical change
20
Chemistry is fun!
False
True
