WorksheetsPOST TEST REVIEW
Total questions: 35
Worksheet time: 18mins
What was the average temperature for this biome during February?
29
28
23
22
2.4 × 103 expressed as a number is —
2,400
24,000
240,000
2,400,000
Which of these best describes the particle motion taking place as CO2 gas is exposed to freezing temperatures?
The motion of the particles becomes random.
The particles decrease in speed.
The motion of the particles is unchanged.
The particles move with more force.
What is an example of a compound?
Table salt (NaCl)
Sodium (Na)
Air
Oxygen (O)
What is an example of a mixture?
Pure Water (H2O)
Air
Table Salt (NaCl)
Oxygen (O)
What is a chemical property of matter?
Acidity
Color
Texture
Shape
This experiment was set up to test the hypothesis that plants grow faster in green light. Each plant was grown in the same type of pot, received the same amount of water and fertilizer.
The amount of fertilizer given to each plant is?
a control
a constant
independent variable
dependent variable
When Magnesium (group 2) forms a bond with Oxygen (Group 16), what will occur?
Magnesium will give away its two valence electrons to form an ionic bond.
Magnesium will share its two valence electrons to form an covalent bond.
Magnesium will give away its two valence electrons to form an covalent bond.
Magnesium will share its two valence electrons to form an ionic bond.
How is the modern model of an atom different from the Bohr atomic model?
The arrangements of the electrons are different.
The numbers of electrons are different.
The shapes of the nuclei are different.
The masses of the atomic particles are different.
One of Dalton’s conclusions concerning his atomic theory was that all atoms of the same element are —
the same
different
Where is most of the mass of an atom located?
the electron cloud
in the energy levels
evenly spread throughout the atom
the nucleus
The above figure shows a student's lab assignment investigating the sound a rubber band produces when the amplitude of the rubber band is changed. What is the independent variable in the lab?
distance away from middle
description of sound
The students holding the rubber band
Repetition of trials
In the chemical formula for ammonia, NH3, what does the subscript 3 represent?
The number of ammonia molecules that will bond together
The number of nitrogen and hydrogen atoms in each molecule of ammonia
The number of nitrogen atoms in each molecule of ammonia
The number of hydrogen atoms in each molecule of ammonia
All elements in the same group have the same number of —
protons
neutrons
valence electrons
atomic mass units
When a metal bonds with a nonmetal, which type of bond is created?
Covalent
Ionic
Metallic
Metals never bond with nonmetals
Which statement is true about all metals?
They are all radioactive.
They are all soft enough to be cut with a knife.
They are all found to the left of the zig-zag line on the periodic table.
They are all poor conductors of heat and electricity.
What is an example of a physical change?
Eating foods
Boiling water
Adding bleach to a washer of clothes
Rusting of iron
Balance the following equation: Mg + O2 → MgO
2Mg + O2 → 2MgO
Mg + O2 → MgO
What is an example of an exothermic reaction?
condensation
baking a cake
exploding fireworks
grilling steak
Which process is used by nuclear power plants to produce low cost, long lasting energy?
nuclear fusion
nuclear fission
Gravitational potential energy is potential energy that depends on what?
Height
Speed
Chemicals
Volume
In the picture above, which ball has the greatest potential energy?
A
B
C
None of the above
As an ice cube melts, its temperature —
increases
decreases
changes
stays the same
Which example is NOT a source of chemical energy?
Batteries
Food
Gasoline
Toaster
The diagram above shows a block from the periodic table. The number six represents the —
number of valence electrons in the element carbon
number of neutrons in the element carbon
atomic mass of the element carbon
atomic number of the element carbon
Which term does NOT describe a way in which heat is transferred?
Conduction
Convection
Radiation
Conversation
The shaded row in the table is called a —
group
family
column
period
The figure above shows a glass and bathtub full of water at the same temperature of 33° C. What statement correctly describes the amount of thermal energy in the glass and bathtub?
The thermal energy of both the glass and bathtub full of water is 33° C.
The bathtub full of water has more thermal energy than the glass of water.
The thermal energy of both the glass and bathtub full of water is 66° C.
The thermal energy of both the glass and bathtub full of water is 66° C.
How has the mass changed after the phase conversion?
The mass has changed temperature.
The mass has increased.
The mass has decreased.
The mass has remained the same.
The process of combining two hydrogen nuclei into a helium atom with the release of tremendous quantities of energy that occurs on the sun is called —
nuclear fusion
nuclear fission
Which of the following converts chemical energy ⇒ kinetic energy ⇒ electrical energy?
A generator
A wood stove
A blender
A tree
The area that shows the amplitude of the wave is —
1
2
3
4
All of the following are mechanical waves EXCEPT—
water waves
earthquake waves
light waves
sound waves
The number of wavelengths that pass a given point is called —
speed
frequency
amplitude
wavelength
"The net force of an object is equal to its mass multiplied by its acceleration."
F= M • A
Which of Newton's laws of motion is defined?
1st
2nd
3rd
none of these
