POM 1
Which object would be the least dense in a tub of water?
A. Golf ball
B. Glass marble
C. Rubber ball
D. Beach ball
D. Beach ball
Describe what you would see if pour oil and water together into a cup? Why does this happen?
The oil separates from the water and floats on top of the water.
This happens because oil is less dense than water.
Which of the following is an example of a mixture?
A. Kool aid
B. Ice tea
C. A salad
D. Chocolate milk
C. A salad
Which of these is the best insulator of electricity?
A. Copper penny
B. Plastic tubing
C. Aluminum foil
D. Metal washer
B. Plastic tubing
All matter can be classified by their physical properties. Which substance can be classified as being soluble in water?
A. Sand
B. Pepper
C. Iron filings
D. Salt
D. Salt
Which of the following is a solution?
A. Chex mix
B. A jar of colored buttons
C. lemonade
D. gummy bears
C. lemonade
What are some physical properties of a penny that you can test?
Conductor/Insulator- its a conductor
Magnetism- it is non magnetic
Relative Density- it is more dense than water
What is the physical state of the following substances ?Oil, Sand, Carbon Dioxide
Oil- Liquid
Sand- Solid
Carbon Dioxide- Gas
What is a way to separate a mixture of iron filings and sand?
Use a magnet
What happens to the following substances if you pour them in a beaker of water and stir?
Pepper, Honey, Sand
Pepper- Insoluble
Honey- Soluble
Sand- Insoluble
Use the property of magnetism to classify the following metals.
Gold, Brass, Iron, Steel
Gold- non magnetic
Brass- non magnetic
Iron- magnetic
Steel- magnetic
What is one way to separate pencil shavings and sand?
Pour water into the mixture and the pencil shavings will float up and separate from the sand.
A student reads the directions on a jar of all natural peanut butter.
Ingredients: roasted peanuts, salt
Directions: Oil separation on top of peanut butter is natural. Just stir and refrigerate.
Why do the directions suggest stirring the peanut butter
Oil from the peanuts separate from the mixture because it is less dense.
What is the most reasonable answer for using copper in an electrical wire?
A. Copper is a good insulator of electricity.
B. Copper is magnetic.
C. Copper is a good conductor of electricity.
D. Copper is shiny.
C. Copper is a good conductor of electricity.
What is one way to separate saltwater with sand?
First pour the mixture through a filter paper to separate the sand and then evaporate the saltwater to separate the salt from the water.