7th Grade Science Benchmark 3 Review

Multiple Choice

What is the total number of atoms in an ammonia (NH₃) molecule?

• 1
• 2
• 3
• 4

Multiple Choice

What is the Law of Conservation of mass?

• Mass is created in a chemical reaction

• Mass is created in a physical change

• Mass is never created or destroyed

Multiple Choice

When molecules are cooling down they will move

• slower

• faster

Multiple Choice

__________ is an energy resource that WILL run out in the next several hundred years.

• Unlimited/Renewable Energy Resource

• Limited/Nonrenewable Energy Resource

• pollution

Multiple Choice

Solar energy can be replaced as fast as they are used so it is considered ____________.

• limited

• unlimited

Multiple Choice

How is a metamorphic rock made?

• By intense heat and/or pressure
• By compacting and cementing
• Cooling and solidification of lava or magma

Multiple Choice

How is a sedimentary rock made?

• By intense heat and/or pressure
• By compacting and cementing
• Cooling and solidification of lava or magma

Multiple Choice

How is a igneous rock made?

• By intense heat and/or pressure
• By compacting and cementing
• Cooling and solidification of lava or magma

Multiple Choice

When tectonic plates collide (convergent) what landform is created?

• folded mountains

• tornados

• rift valley

Multiple Choice

Where plates pull away from each other

• Transform Boundary

• Convergent Boundary

• Divergent Boundary

Multiple Choice

__________ are formed when two continental plates collide.

• Volcanoes

• Strike-slip faults

• folded mountains

Multiple Choice

What energy is pulling an arrow back 

• kinetic energy
• potential energy
• energy

Multiple Choice

______ is the end result of a chemical reaction. (Right Side)

• Product

• Deleting atoms and matter

• Subscript

• Reactant

Multiple Choice

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Multiple Choice

How many total atoms are in this compound? Al₂O₃

• 2

• 5

• 6

• 3

Multiple Choice

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!
• No!

Multiple Choice

Balance the following equation:

___ H₂+ ___ O₂→___ H₂O

• 1, 1, 3

• 2, 2, 2

• 1, 2, 1

• 2,1, 2

Multiple Choice

Is the following equation balanced?
4Fe + 3O₂ --> 2Fe₂O₃

• yes
• no

Multiple Choice

How many Hydrogen are in 4H₂O?

• 6
• 8
• 2
• 4

Multiple Choice

Is this equation balanced?

• yes
• no
• Not enough information

Multiple Choice

The process going from a gas to a liquid is called ...

• evaporation 
• melting 
• condensation 
• sublimation 

Multiple Choice

Which of the following is a common sign that a chemical change has occurred?

• A chemical has turned a different color, bubbled, and/or changed temperature.

• A chemical has changed to a different state of matter, such as a liquid to a solid.

• A chemical has changed size.

• A chemical has become a different shape.

Multiple Choice

Natural resources that undergo a chemical process

• Properties

• Liquid

• Synthetic Materials

Multiple Choice

What is a renewable resource?

• An object you can reuse
• An object you cannot reuse
• Fossil fuels
• Oil

Multiple Choice

What is the difference between natural and synthetic resources?

• Natural are man-made, synthetic are found in nature

• Natural occur in nature, synthetic are man-made

• There is no difference

• We don't use natural resources but we use synthetic resources

Multiple Choice

What does it mean to absorb energy?

• To take energy in
• Difference in temperature
• Heat flow
• Destroy energy

Multiple Choice

What materials would be good insulators for a handle on a pan or pot that would be used on the stove?

• wood or plastic

• metal or rubber

• wood or rubber

• copper or steel

Multiple Choice

What type of thermal energy transfer is the illustration an example of?

• Conduction

• Convection

• Radiation

• Evaporation

Multiple Choice

When a reaction ___________ heat, the reaction feels colder. This is called an _________________ reaction

• Absorbs, endothermic

• Releases, exothermic

• Absorbs, exothermic

• Releases, endothermic

Multiple Choice

When a reaction ___________ heat, the reaction feels hotter. This is called an _________________ reaction.

• Absorbs, endothermic

• Absorbs, exothermic

• Releases, endothermic

• Releases, exothermic

Multiple Choice

What is the organelle that contains the chlorophyll used in photosynthesis ?

• mitochondria
• ribosome
• chloroplast
• nucleus

Multiple Choice

What organisms undergo cellular respiration?

• fungi

• animals

• plants

• all organisms

Multiple Choice

What are the reactants in cellular respiration?

• glucose and oxygen
• glucose and carbon dioxide
• water and carbon dioxide
• oxygen and glucose

Multiple Choice

Which gas is needed for Cellular Respiration?

• Oxygen

• Carbon Dioxide

• Water

• Glucose

Multiple Choice

Which statement is true about this graph?

• This function is always constant
• This function is always increasing
• This function is never increasing
• This function is both increasing and decreasing

Multiple Choice

What would happen if their were no producers?

• Every population would grow larger

• Everything would die out

• The animals would make their own food

Multiple Choice

In the energy pyramid below, which organism has the least amount of energy available?

• Producers
• Herbivores
• Carnivores
• Top Predator

Multiple Choice

Which of the following is the correct order of organization in living things from most basic (simple) to most complex?

• a.  Organism, cell, tissue, organ, organ system
• a.  Organ system, organ, tissue, cell, organism
• a.  Cell, tissue, organ, organ system, organism
• a.  Cell, organ, tissue, organ, organism, organ system

Multiple Choice

The smallest level of organization of life in an organism

• tissue
• cell
• organ
• organ system

Multiple Choice

A cell wall is ONLY in plants as a thick structure to PROTECT the plant, so ...

• is very soft and flexible

• is very rigid, and supports the plant cell, giving it its shape

Multiple Choice

The cell membrane is found in plants and animals. It is selectively permeable like a guard to protect the cell, which means...

• All materials can enter and leave the cell
• Certain things can enter while others cannot

Open Ended

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