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WorksheetsComprehension Quiz 2 Review - Chemistry of Life
Total questions: 26
Worksheet time: 13mins
A student drew a diagram of a simple molecule but forgot to label it. Which simple molecule were they MOST LIKELY drawing?
Carbon dioxide (CO2)
Carbon monoxide (CO)
Ammonia (NH3)
Glucose (C6H12O6)
The atomic structure of a substance is shown in the diagram. Which conclusion is most accurate?
Two different kinds of atoms make up this substance
The atoms are held together by string
The substance is made of two gases mixed together
The substance is made of only one type of atom
These models show the chemical structures of different molecules. Each of these molecules is made up of ___________.
different atoms bonded together in different ways
three atoms combined in the same way
four atoms that are all bonded together
the same three atoms
The atomic structure of a substance is shown in the diagram. Which conclusion is most accurate?
Two different kinds of atoms make up this substance.
The substance is a mixture.
The substance is made of two gases mixed together.
The substance is made of only one type of atom.
The chemical formula for glucose is C6H12O6. What does this molecule contain? SELECT 3!
6 carbon atom
12 carbon atoms
6 hydrogen atom
12 hydrogen atoms
6 oxygen atoms
When you compare the movement of particles in a solid, liquid, and gas, which is true?
Particles in a solid move faster than in a liquid
Particles in a gas move faster than in a liquid
Particles do not move
All particles move at the same speed
You leave a glass of water on the windowsill, and it slowly evaporates in the sun. The water in your glass _________.
lost thermal energy, and it solidified into ice
gained thermal energy, and it solidified into ice
lost thermal energy, and it evaporated into a gas
gained thermal energy, and it evaporated into a gas
When you take ice out of the freezer, the motion of the particles __________.
increases as the ice melts
decreases as the ice melts
is greatest when the ice is a solid
is least when the ice is completely melted
When you compare a solid, a liquid, and a gas, there is __________.
more space between the particles in a solid than in a gas
less space between the particles in a gas than in a liquid
more space between the particles in a gas than in a liquid
less space between the particles in a liquid than in a solid
Which of the following happens when you add thermal energy to a substance? CHOOSE TWO:
Temperature increases
Temperature decreases
Kinetic energy increases
Kinetic energy decreases
What is the best way to separate a mixture of wood chips and iron nails?
Use a filter
Use a magnet
Melt the iron
Freeze the mixture
How could you separate a salt water mixture?
Evaporate the water out of the mixture
Freeze the mixture
Dissolve the mixture
Use a magnet
A mixture of sand and water can be separated by __________.
Filtering or straining out the solid pieces
Warming the mixture until both are liquid
Freezing the liquid
Using a magnet
CHOOSE ALL THAT APPLY: Physical properties of elements/compounds include...
Color
Ability to burn
State of matter
Density
Order the states of matter from MOST dense to LEAST dense:
solid, liquid, gas
gas, liquid, solid
solid, gas, liquid
gas, solid, liquid
Order the states of matter from the LEAST kinetic energy to the MOST kinetic energy:
solid, liquid, gas
solid, gas, liquid
gas, liquid, solid
gas, solid, liquid
Which are examples of PHYSICAL CHANGES? Select all that apply!
Changing states of matter
Rusting
Compressing
Burning
Which are examples of CHEMICAL CHANGES! Select all that apply!
Burning
Oxidizing
Changing states of matter
Compressing
Which of the following are signs of chemical change?
Unexpected color change
Releasing or absorbing energy
Producing gas, heat or light
Whether the substance floats or sinks
Which is true of ALL chemical and physical changes?
Energy is created
Energy is destroyed
Mass is created
Mass is conserved
If you could count all the atoms in any chemical or physical change, which is true?
There are more atoms after the change (in the products).
There are fewer atoms after the change (in the products).
There are the same number of atoms before and after the change (in reactants and products).
All the atoms are used up.
In a chemical reaction, atoms are __________.
created
destroyed
rearranged and lost
rearranged but not lost
During a chemical reaction between a liquid and solid, the temperature of the mixture decreased. This means that energy was _______.
created during the reaction
released to its surroundings
destroyed during the reaction
absorbed from its surroundings
During a chemical reaction between two liquids, the temperature of the solution increased. Energy was __________.
created by the reaction
destroyed by the reaction
released during the reaciton
absorbed during the reaction
In a chemical reaction where energy is ABSORBED from its surroundings, the __________.
temperature increases
temperature decreases
mass increases
mass decreases
In a chemical reaction where energy is RELEASED to its surroundings, the __________.
temperature increases
temperature decreases
mass increases
mass decreases
