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Worksheets3rd benchmark review 8thCMS
Total questions: 47
Worksheet time: 3hrs 43mins
Name
Class
Date
1.
Why are fossil fuels more widely used than solar energy?
a)
Solar energy is harder to find
b)
Fossil fuels are much cheaper
c)
Fossil fuels are more abundant
d)
The sun's energy can never be harnessed
2.
All forms of energy can be described as which two types of energy?
a)
mechanical and kinetic
b)
sound and thermal
c)
kinetic and potential
3.
The particles of a _ are loosely packed and roll/slide past each other. (1.1)
a)
Solid
b)
Liquid
c)
Gas
4.
Which particle is represented by the atomic number? (4.2)
a)
Protons
b)
Neutrons
c)
Electrons
5.
Which of the 4 major groups is the largest? (4.4)
a)
Metals
b)
Semimetals
c)
Nonmetals
d)
Inert/Noble Gases
6.
The elements in this group only have 1 valence electron and include Li, Na, and K.
a)
Group 11
b)
Group 1
c)
Group 3
7.
A chemical formula is considered to be organic if it contains the element...
a)
Carbon
b)
Oxygen
c)
Hydrogen
d)
Helium
8.
Which of the following is an organic formula?
a)
CH4
b)
O2
c)
NaCl
d)
H2O
9.
All the elements on the elements on the right of the periodic table are called...
a)
Metals
b)
Metalloids
c)
Nonmetals
10.
All the elements on the left side of the periodic table are called..
a)
Metals
b)
Metalloid
c)
Nonmetals
11.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
12.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
13.
1kg =_____ grams
a)
1000
b)
100
c)
1/1000
d)
.0001
14.
Convert from meters to cm: 9 meters
a)
900 cm
b)
90 cm
c)
0.9 cm
d)
0.09 cm
15.
Endoskeleton means . . .
a)
internal skeleton
b)
external skeleton
c)
no skeleton
d)
no brain
16.
Heterotrophs are animals that
a)
produce their own food in their bodies
b)
can not produce their own food and must get energy from other animals and plants
c)
eat meat to survive
d)
eat plants to survive
17.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
18.
In an endothermic reaction, heat is ,,,
a)
taken in
b)
given out
19.
A chemical reaction that requires energy is a
a)
exothermic reaction
b)
endothermic reaction
c)
over reaction
20.
How many protons does Helium have?
a)
4
b)
4.0026
c)
2
d)
1
21.
Which type of element is shiny, ductile and malleable?
a)
metal
b)
nonmetal
c)
metalloid
d)
play dough
22.
How many electrons does Xenon have?
a)
131.20
b)
27
c)
54
d)
10
23.
Using this image, what organelle is A?
a)
Endoplasmic Recticulum
b)
Flagella
c)
Rough ER
d)
Smooth ER
24.
What is the function of the mitochondria?
a)
Structure that manufactures ribosomes
b)
Structures that converts nutrients to energy
c)
Stack of membranes that packages chemicals
d)
Structure that contains DNA and directs the cell
25.
What is the function of the vacuole?
a)
Sac that stores water, nutrients, and waste products
b)
Sac filled with digestive chemicals
c)
Jelly-like substance within the plasma membrane
d)
stack of membranes that packages chemicals
26.
What type of cell organelle is this?
a)
Cell Wall
b)
Chloroplast
c)
Endoplasmic Reticulum
d)
Vacuole
27.
What kind of cell organelle is this?
a)
Nucleus
b)
Golgi Body
c)
Smooth ER
d)
Plasma Membrane
28.
Which of the following statements is true of cytokinesis
a)
takes place in plant cells only
b)
completes the cell cycle
c)
organizes DNA
d)
occurs in prophase
29.
During interphase, a cell grows, duplicates organelles, and...
a)
copies DNA
b)
divides the nucleus
c)
divides the cytoplasm
d)
produces a new cell
30.
Here are 5 cubic centimeters (cm3). All together they have a mass of 20 g what is the density?
a)
20 g/cm3
b)
80 grams
c)
4 g/cm3
d)
80 g/cm3
31.
What are the units for measuring density of a solid?
a)
grams
b)
m/s2
c)
g/cm3
d)
newtons
32.
The density of this material is 2 g/cm3.
There are 24 cm3 Find the total mass.
There are 24 cm3 Find the total mass.
a)
12 grams
b)
48 grams
c)
12 g/cm3
d)
48 g/cm3
33.
This term describes speed and direction
a)
velocity
b)
gravity
c)
deceleration
d)
momentum
34.
This describes the rate at which speed and direction change
a)
mass
b)
weight
c)
acceleration
d)
metrics
35.
If the mass of an object is 1000kg on Earth, what is it's mass on the moon?
a)
10kg
b)
100kg
c)
1000kg
d)
10,000kg
36.
What kind of chemical bond forms between a metal and a nonmetal?
a)
Covalent bond
b)
Ionic bond
c)
Can be either covalent or ionic
d)
Hydrogen bond
37.
What kind of bond forms between two nonmetals?
a)
Covalent bond
b)
Ionic bond
c)
Can be either covalent or ionic
d)
Hydrogen bond
38.
What kind of bond forms when atoms share electrons?
a)
Chemical bond
b)
Ionic bond
c)
Covalent bond
d)
Electron bond
39.
What kind of bond forms when one kind of atom gives electrons to another kind of atom?
a)
Chemical bon
b)
Ionic bond
c)
Covalent bond
d)
Electron bond
40.
Balance the following equation:
_Fe(OH)3 --> _ Fe2O3 +_H2O
_Fe(OH)3 --> _ Fe2O3 +_H2O
a)
2Fe(OH)3 --> _ Fe2O3 + 3H2O
b)
4Fe(OH)3 --> 2Fe2O3 +2H2O
c)
2 Fe(OH)3 --> 2 Fe2O3 + H2O
d)
3 Fe(OH)3 --> Fe2O3 + 3H2O
41.
Nuclear Power is -
a)
Renewable
b)
Non-renewable
42.
Splitting a uranium atom is called -
a)
fission
b)
fusion
43.
This indicates an acid:
a)
pH > 7
b)
pH < 7
c)
pH = 7
44.
This indicates a neutral solution:
a)
pH > 7
b)
pH < 7
c)
pH = 7
45.
Plants and animals use solids and liquids that contain nitrogen, it returns to the soil, then what happens?
a)
The organisms die and decay
b)
They create a new plant
c)
The nitrogen kills the plant
d)
The plant releases the nitrogen into the air
46.
Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
47.
How far will a person go if they jog for 2 hours at a speed of 12 km/hr?
a)
6 km
b)
0.5 km
c)
10 km
d)
24 km
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