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IS Sem1 review
IS Sem1 review
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Questions
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Answers
1
AX + BY ---> AY + BX is a double replacement reaction
False
True
2
After 1950 what happens to the carbon dioxide levels
increase because of burning fossils fuels
increase because of volcanoes
decrease ecause of burning fossils fules
increase because of earthquakes
3
Carbon-10 has how many protons
6
10
14
2
4
Cold rock rises
False
True
5
Oxygen has 8 electrons and 6 valence electrons. What does it do to become stable
gain 2 electrons
lose 6 electrons
it is already stable
lose 8 electrons
6
Coastal areas
have no temperature changes
have large temperature changes
have small temperature changes
7
Chemical reactions produce more energy than nuclear reactions
false
true
8
What is the purpose of the Ozone layer?
To help create weather patterns around the world
To protect life on Earth from harmful UV rays from the sun
To provide oxygen for the planet
To protect the Earth from Meteors
9
An ion has 3 protons and 4 electrons. What is the overall charge?
1
-1
4
-4
10
The time difference between P and S waves can measure
the name of the earthquake
the color of the earthquake
the distance to the earthquake epicenter
the size of the earthquake
11
Hot rock rises
True
False
12
In a chemical reaction the mass of the reactants is equal to the mass of the products
true
false
13
Compared to cold air warm air can hold
same amount of moisture
more moisture
less moisture
14
A + BX ---> AX + B is a single replacement reaction
False
True
15
An element has a atomic number of 3 and an mass number of 7. How many electrons?
7
3
4
11
16
As the temperature of air increases the space between molecules
increases
stays the same
decreases
17
AX ----> A + X is a decomposition reaction
True
False
18
Which earthquake wave type arrives first
surface wave
P wave
S wave
19
As you increase in altitude, what happens to the air temperature in the stratosphere?
increases
decrease
20
A + X ---> AX is a synthesis reaction
true
false
21
An element has a atomic number of 3 and an mass number of 7. How many protons?
11
4
3
7
22
The theory of continental drift is supported by
same fossils are found in different continents
continents fit like puzzles
same rocks are found in different continents
all of the above
23
As you go across a period the number of protons
decreases
increases
24
Carbon -10 has how many neutrons
6
4
14
10
25
Every element in the same group has the same number of valence electrons
False
True
26
Which abundant elements are used in evidence that the Big Bang occured
gold and silver
hydrogen and helium
carbon and oxygen
neon and argon
27
Calcium(group 2) has an ion charge(oxidation number) of
-2
-1
+1
+2
28
Sulfur(Group 16) has an ion charge(oxidation number)
+1
-1
-2
+2
29
The Mid-Alantic ridge is an example of
a divergent boundary
a transform boundary
a covergent boundary
30
Lithium has 3 electrons and 1 valence electron. What does it do to become stable
gain 1 electron
lose 1 electron
gain 3 electrons
lose 3 electrons
31
Carbon is in group 14, how many valence electrons
4
6
14
32
Lithium(Group 1) has an ion charge(oxidation number)
-1
+2
+1
-2
33
CH
4
+ O
2
-> CO
2
+ 2H
2
O is a combustion reaction
True
False
34
Which of the following groups are the most reactive
group 1
group 18
group 2
group 16
35
If the Earth was not tilted
the day would last 30 hours
there would be no seasons
there would be more Earthquakes
seasons would be longer
36
The equator has heavy rain because
moist air rising and wind
the earth's spin
tall mountains
earthquakes
37
Fair weather is caused by
low pressure
cold fronts
high pressure
earthquakes
38
As the temperature of a star increases the luminosity(brightness)
decreases
stays the same
increases
39
Covalent compounds have
metals only
non-metals only
a combination of metals and non-metals
40
In which layer does weather occur?
thermosphere
mesosphere
troposphere
stratosphere
41
The modern periodic table is organized by
atomic mass
number of neutrons
number of protons
number of valence electrons
42
Why does red shift of galaxies support the Big Bang Theory
show galaxies are moving away from us
show galaxies are moving towards us
show galaxies are not moving
43
What is the equation for density
mass * volume
volume/mass
mass/volume
mass + volume
44
Which of the following is balanced?
CH4 + 2O2 -> CO2 + 2H2O
CH4 + O2 -> CO2 + H2O
CH4 + O2 -> CO2 + H2O
CH4 + O2 -> CO2 + H2O
45
Why does the temperature in the stratosphere increase with height
the ground warms it
the ozone layer cools it
the ground cools it
the ozone layer warms it
46
As you increase in altitude, what happens to the air temperature in the troposphere?
Decreases
Increases
Stays the same
Gets cray-cray
47
Ionic compounds have
a combination of metals and non-metals
metals only
non-metals only
48
Increasing levels of carbon dioxide
decrease temperatures
leave temperatures the same
increase temperatures
49
An atom has 3 protons and 3 electrons. What is the overall charge?
6
3
-3
0
50
The temperature of the sun is about
40000K
1000K
6000K
20000K
51
Which of the following groups are least reactive
group 1
group 18
group 17
group 2
52
Which of the following is balanced?
Mg + Cl2 -> 2MgCl2
Mg + Cl2 -> MgCl2
Mg + 2Cl2 -> MgCl2
2Mg + Cl2 -> MgCl2
53
Which of the following is balanced?
2N2+ H2 -> NH3
N2+ 3H2 -> 2NH3
N2+ H2 -> 2NH3
N2+ H2 -> NH3
54
Reactivity increases as you move down group 1
False
True
55
Because of nuclear fusion the hydrogen in the sun decreases during its life
True
False
56
The cosmic microwave background radiation(CMB) supports the Big Bang Theory
it is only north direction
because it is in every direction
it is only south direction
57
Bromine(Group 17) has an ion charge(oxidation number)
+1
-1
-2
+2
58
An element has a atomic number of 3 and an mass number of 7. How many neutrons?
4
7
3
11
59
The motion of molten rock in the mantle is called convection
True
False
60
Lithium oxide has the formula Li
2
O
True
False
