2nd Nine Week Assessment Review

Speed, Density

100

What's the formula for speed? 

speed = distance & time

200

If a car is traveling 100 km for 2 hrs. Calculate speed

Speed = 50 km/hr

300

If Mrs. Williams is running to the cafeteria 10 yds/s for 50 secs. How far is she from the cafeteria? 

500 yards

400

A necklace has a volume of 2 cm³ and a mass of 36 grams. What is the density?

18 g/cm³

500

If two rocks have a volume of 6 cm³ and a mass of 24 grams. What is the density? Include unit of measurement.

4g/cm₃

Elements & Compounds

100

Are elements and compounds both considered pure substances? 

Yes

200

Which one of the following is an element?

Gold(Au) or Oxygen(O₂₎

Both

300

NaCl is commonly classified as a what?

Compound

400

Na, Ar_3, CO, NaCl

How many of the above are compounds?

 TWO

500

Which of the following represents an element?

CO, NI, Ar, BO, Xe, HO

Ar, and Xe

Chemical Reactions

100

Mr. Hill and Mrs. Williams made ghost rockets mixing vinegar and baking soda together causing bubbling and fizzing.  What was the indication that a chemical reaction had occurred?

A gas was produced

200

Which one of the following indicates a chemical reaction?   Temperature change or change in state of matter

Temperature change

300

When baking soda and vinegar are mixed together, what occurs?

a chemical reaction

400

Which of the following indicates a chemical change?

 formation of rust, salt dissolved in water, fresh brewed coffee

formation of rust

500

In the Fall when leaves change color on the trees, is this a PHYSICAL or CHEMICAL change?

Chemical (photosynthesis)

Renewable vs Nonrenewable Resources

100

What type of resource, (renewable or non-renewable) is solar energy?

renewable

200

Wind, sunlight and water are what types of energy resources?

Renewable

300

 Energy made from prehistoric plants and animals is known as:

Fossil fuels

400

Where does most energy ultimately come from?

The sun

500

Name at least 3 alternative renewable energy resources. 

any 3 of the following:

hydroelectric, geothermal, wind, and solar

Energy Transformations

100

A flashlight has energy transformation from______(energy) to _________(energy)to ______(energy)

Chemical to electrical to light

200

Eating a hamburger transforms __________ energy into ________ energy into mechanical energy.

chemical to heat/thermal

300

The Pizzeria bakes pizzas all day long.  This process transforms _________energy into ________energy.

Heat/thermal to chemical

400

A bear catches and eats a fish. What energy transformations are present? Name (4)

Mechanical to chemical to heat to mechanical

500

List the energy transformations  that occur with a "play-station."

Electrical to mechanical to sound