Show:
You Matter
Water Matters
Physical or Chemical Changes
Matter of Fact
Grab Bag
100
Mike is racing his electric toy truck. The truck hits a brick wall, and the front gets crushed. If the truck originally had a mass of 2.0 kg, how much mass does it most likely have now?
What is 2.0 kg?
100
When water freezes, a physical change has occurred. Which is most likely a property of the material formed by this physical change?

a. It will never be a liquid again

b. It will be in the form of a gas

c. It can be changed back into its original form

d. It can take the form of any container it is put in

D
100
Ice melting into water
What physical change?
100
Describe the change that happens to ice cream when heat is added. (physical or chemical, solid/liquid/gas)
a physical change occurs as the ice cream melts into a liquid
100
What does the "H" on a weather map stand for?
A region of high pressure.
200
Ivy mixed 30 g of hot chocolate mix with 200 g of hot milk. She then added 5 marshmallows with a mass of 8 g each. What would the mass of the hot chocolate be?
What is 270 grams?
200
List the three stages of water in the different forms of matter
Solid-ice, liquid-water, gas-water vapor/steam
200
A nail rusting after being outside
What is chemical change?
200
A teacher places a penny into an amount of acid in a closed container to demonstrate a chemical change. The penny weighs 3 grams and the acid 230 grams. After the chemical reaction takes place, what will be the mass of the penny and acid?
233 grams
200
What effect would cloud cover have on temperatures during the summer months in North Carolina?
Temperatures would decrease
300
Katrinia built a house weighing 1 pound out of toy blocks, but she accidentally knocked it down. What was the weight of the fallen blocks?
What is 1 pound?
300
An ice cube is placed in a glass of water. The total weight of the ice cube and water is 0.5 pounds. After the ice cube melts, what will most likely be the total weight of the water?
What is 0.5 pounds?
300
A candle burning
Chemical
300
What are some signs that a chemical change has occured
bubbles, change in mass/weight, color change, brand new substance being formed
300
How do decomposers benefit an ecosystem?
they make soil more fertile by breaking down dead plants and animals
400
Maz adds 250 g of water and 250 g of rice to a pot on a stove and covers the pot with a lid. As the water boils, it gets absorbed by the rice. How much do the contents of the pot weigh after the rice finishes cooking?
What is 500 g?
400
What happens to colored sugar when it is added to water?

a. the sugar reacts and colors the water

b. the sugar becomes white and the water changes

c. the sugar evaporates and the water changes color

d. the sugar dissolves and colors the water

D
400
Ironing a shirt
Physical 
400
John filled a bottle half way with water, placed a lid on it, then put it in the freezer. How does the weight of the water and bottle compare before and after it is in the freezer?
They weigh the same
400
In a savanna ecosystem, what would most likely cause a decrease in the lion population?
decrease in prey populations 
500
You get a toy spaceship for your birthday. It came in pieces and you had to put it together. Explain how the pieces compare to the completed spaceship.
The mass of the completed model equals the mass of all the pieces
500
Susan is completing an experiment in science. She mixes 1 cup of hot water with 2 cups of salt. What will most likely happen to the substances?

a. the substances will blend and their properties will change

b. the substances will not blend and their properties will be changed

c. the substances blend and form another liquid that appears as a soild

A
500
Plowing a field 
Physical 
500
Physical or chemical change?

a. sugar dissolving in tea

b. sunshine warming a sidewalk

c. acid in the stomach digesting food

a, b physical

c chemical 

500
List the steps of the water cycle and explain each step 
Evaporation, Condensation, precipitation, collection/runoff