Speed, Density
What's the formula for speed?
speed = distance & time
Yes
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
What type of resource, (renewable or non-renewable) is solar energy?
renewable
A flashlight has energy transformation from______(energy) to _________(energy)to ______(energy)
Chemical to electrical to light
If a car is traveling 100 km for 2 hrs. Calculate speed
Speed = 50 km/hr
Which one of the following is an element?
Gold(Au) or Oxygen(O2)
Both
Which one of the following indicates a chemical reaction? Temperature change or change in state of matter
Temperature change
Wind, sunlight and water are what types of energy resources?
Renewable
Eating a hamburger transforms __________ energy into ________ energy into mechanical energy.
chemical to heat/thermal
If Mrs. Williams is running to the cafeteria 10 yds/s for 50 secs. How far is she from the cafeteria?
500 yards
NaCl is commonly classified as a what?
Compound
When baking soda and vinegar are mixed together, what occurs?
a chemical reaction
Energy made from prehistoric plants and animals is known as:
Fossil fuels
The Pizzeria bakes pizzas all day long. This process transforms _________energy into ________energy.
Heat/thermal to chemical
A necklace has a volume of 2 cm3 and a mass of 36 grams. What is the density?
18 g/cm3
Na, Ar3, CO, NaCl
How many of the above are compounds?
TWO
Which of the following indicates a chemical change?
formation of rust, salt dissolved in water, fresh brewed coffee
formation of rust
Where does most energy ultimately come from?
A bear catches and eats a fish. What energy transformations are present? Name (4)
Mechanical to chemical to heat to mechanical
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
Which of the following represents an element?
CO, NI, Ar, BO, Xe, HO
Ar, and Xe
In the Fall when leaves change color on the trees, is this a PHYSICAL or CHEMICAL change?
Chemical (photosynthesis)
Name at least 3 alternative renewable energy resources.
any 3 of the following:
hydroelectric, geothermal, wind, and solar
List the energy transformations that occur with a "play-station."
Electrical to mechanical to sound