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Year 11 Chemistry Pretest Flashcards | StudBud
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Year 11 Chemistry Pretest
Year 11 Chemistry Pretest
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Answers
1
What does the Group number tell you about an element?
How many energy levels it has
How many valence electrons it has
How many total electrons it has
How many protons it has
2
What does an element's atomic number represent?
no. of shells
no. of protons or electrons
no. of neutrons
no. of atoms
3
What type of change occurs when iron and oxygen combine to produce rust?
physical change
change of state
colour change
chemical change
4
In the periodic table as you move along a period from Group 1 to Group 18 the
Number of atoms increase by 1
Number of neutrons increase by 1
Number of protons increase by 1
Number of nucleus particles increase by 1
5
The Elemental symbols for Potassium, Silver and Tin are
K, I & M
P, S & T
P, Si & Ti
K, Ag & Sn
6
As you move along a period from Group 1 to Group 18 the elements generally become
Less electronegative
Larger radius
Smaller radius
more reactive
7
How many electrons in the outer shell are needed for atoms to be stable (except He or H)?
2
7
1
8
8
The symbol/formula for Hydrogen gas is
H
H2O
H2
He
9
How many hydrogen atoms are there in a molecule of C
2
H
5
OH?
6
5
2
1
10
The chemical formula for aluminium carbonate is
Al2(CO3)3
Al3(CO3)2
AlCO3
Al2(CO3)3
11
The charge on an ion is equal to:
number of electrons gained or lost
protons + electrons
protons x electrons
electrons - protons
12
Ionic Compounds are formed between
metal & non-metals
Metal & metal
salt and water
Non-metal and non-metals
13
The nucleus of an atom is made of:
protons and neutrons
protons
electrons
empty space
14
What does the Period number tell you about an element?
How many total electrons it has
How many energy levels it has
How many protons it has
How many valence electrons it has
15
The molecular formula for Hydrochloric acid is
H2SO4
H2Cl
HCl
HNO3
16
Which of the following properties would be the same for a magnesium atom and a magnesium ion?
atomic number and mass number
chemical properties and radius
mass number and radius
atomic number and chemical properties
17
What are the horizontal rows called on the Periodic Table?
Groups
Families
Groups and Families
Periods
18
The electron shell structure of sodium (atomic number = 11) is:
8, 3
2, 9
2, 8, 1
2, 8
19
What is the charge on a proton?
positive
negative
zero
neutral
20
The element most commonly associated with organic chemistry
Oxygen
Coal
Carbon
Gold
21
When a flame is placed into hydrogen gas it:
fizzes
pops
flares up
goes out
22
Which of the following is equivalent to number of protons plus number of neutrons?
atomic number
electron number
neutron number
mass number
23
What are the vertical columns called on the Periodic Table?
Groups and Families
Periods
Groups
Families
24
The electron subshell structure of a sodium ion (atomic number = 11) is:
1s22s22p6
1s22s22p63s1
1s22s22p63p1
2, 8, 1
25
The Chemical name for C
3
H
8
Propene
Methane
Ethene
Propane
