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TY Chemistry
TY Chemistry
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Questions
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Answers
1
Organic Chemistry has applications in ______.
All of the above
Music Production
Pharmaceuticals
Beauty Products
2
Organic Chemistry is the study of compounds of ________.
Fluorine
Nitrogen
Carbon
Oxygen
3
Which of the following is a
physical change
?
Cooking an egg
Burning wood
Rusting of iron
Melting ice
4
What is the test for hydrogen gas?
It turns blue litmus paper red
It glows with a match
It pops with a lit splint
It turns limewater milky
5
What is the SI unit of chemical amount?
Pound
Kilogram
Mass
Mole
6
What is the mass of 1 mole of sodium chloride (NaCl)?
58.5 g
6.022 x 1023 g
100 g
35.5 g
7
Which of the following is NOT a state of matter?
Solid
Gas
Liquid
Steam
8
What type of reaction gives off heat?
Endothermic
Exothermic
9
What happens to the particles of a substance when it melts?
They disappear
They move further apart
They come closer together
They stop moving
10
What does the diagram represent?
None of the above
Mixture
Compound
Element
11
A solvent and a solute combine to make a ______.
Solution
Mixture
Compound
12
Which of the following is a base?
Lemon Juice
Vinegar
Sodium Hydroxide
Hydrochloric Acid
13
What type of reaction is
burning
a substance?
Decomposition
Displacement
Combustion
Neutralisation
14
What does the Law of Conservation of Mass state?
Mass is created during reactions
Mass always increases during a reaction
Mass is the same before and after a reaction
Mass is lost as heat
15
How many moles are in a 56 g sample of oxygen gas?
1 mol
1.56 mol
2 mol
1.75 mol
16
If an acid has its pH tested, which of the following values could it have?
7
12
9
3
17
Name this organic compound
Butane
But-2-ene
Butene
Propane
18
Name this organic compound
Butanoic Acid
Butanal
But-2-ene
Butene
19
What would
increase
the rate of a chemical reaction?
Decreasing concentration
Using smaller particles
Lowering the temperature
Adding cold water
20
What is the name of this organic compound?
Ethanol
Ethene
Ethane
Ethanoic Acid
21
In a solution of Mi Wadi Orange, was is the
solvent
?
Mi Wadi
Water
22
How many particles are found in 1 mole of a substance?
22.4 L
100 g
6.022 x 1023
6 g
23
Which of these elements is also a noble gas?
Hydrogen
Oxygen
Neon
Carbon
24
Carbon has an atomic mass of 14.
False
True
25
Which of the following is a compound?
H2
N
O2
H2O
26
What type of reaction gives off heat?
Exothermic
Endothermic
27
What does a catalyst do to a reaction?
Speeds it up
Changes what is produced
Has no effect.
Stops it completely
28
What is the mass of 0.25 mol of NaOH?
50 g
5 g
10 g
40 g
