WorksheetsScience
Total questions: 25
Worksheet time: 13mins
Q1.
Combustion and single-replacement reactions are __________ redox reactions.
always
never
sometimes
mostly
Q2.
Cl2 + 2e- --> 2Cl - is an example of:
a chemical reaction
redox
oxidation
reduction
Q3.
What is the reducing agent here: N2 + 3H2 --> 2NH3
N2
H2
NH3
2NH3
Q.
Based on the activity series, which metal could X represent in the reaction below?
X + Ca (NO3)2 --> Ca + X (NO3)2
Ba
Fe
Mg
Zn
Q. What will be the result of the following: Li + NaF ->
Li will replace F
Na will replace Li
Li will replace Na
no reaction will occur
Q. Which is not an Alkali Metal?
Lithium
Sodium
Gold
Potassium
Q. These are found on the Periodic Table.
elements
mixtures
compound
Q. Is NaCl (table salt) a Organic or Inorganic Compound?
Inorganic
Organic
Compound Function: to provide energy, can be broken down into sugars
Lipids
Proteins
Nucleic Acids
Carbohydrates
Q. How many hydrogens does propyne have?
4
6
8
10
Q. Name the compound
3,4-dipropylhexane
3,4-diethyl-3,4-dimethylhexane
Twelvane
3,3,3,4,4,4-hexamethylhexane
Q. Name this Molecule
butane
cyclohexane
3-methylpentane
4-ethylpentane
Q. Name this Alkane
4-ethyl-2,2-dimethylhexane
5-dimethyl-3,3-ethylhexane
3-ethyl-5,5-dimethylhexane
4-ethyl-2-methylhexane
What is the suffix of a ketone
oxo
ol
al
one
Coal burns with ______
(a) Flame
Only glow
(c) Both flame and glow
(d) None of these
The products of combustion are
(a) Carbon dioxide and water
(b) Oxygen and water
(c) Only carbon dioxide
(d) Only oxygen
.
Water cannot be used as a fire extinguisher to put out.
x
(a) Burning charcoal
(b) Burning oil
(c) Burning paper
(c) Burning electric wire
Like fuel the sun also provides heat and light. The process taking place in the sun is called
(a) Combustion
(b) Nuclear process
(c) Burning
(d) All of these
In order for an atom to be neutral what has to be true?
The atom has more protons than neutrons
The atom has more neutrons than protons
The atom has the same number of protons and neutrons
The atom has the same number of protons and electrons
Where is most of the mass in an atom located?
in the nucleus
in the protons
in the neutrons
in the electrons
Bases will turn litmus paper __________, while acids will turn litmus paper __________.
blue.....red
red.....blue
pink.........colourless
colourless..........pink
One benefit of pH paper is that it...
Only tells you if a substance is an acid or a base
Tells you the pH of a substance
It is very accurate
It is expensive
products of a neutralisation reaction are always
an acid and a base
an acid and a salt
salt and water
salt and base
Why is toothpaste alkaline?
It can neutralise acid in your mouth
It can refresh your teeth
Toothpaste is not alkaline.
It can neutralise strong alkaline in your mouth
Which of the following is a Mineral Acid?
Citric Acid
Oxalic Acid
Glycolic Acid
Sulphuric Acid
