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100
What is the difference between element and compound?
Element is made up of a single atom. Compound is 2 or more atoms.
100
Give an example of chemical change ?
Rust- burning wood
100
What causes color?
Reflection
100
What is Newtons 3rd law?
For every action there is an equal and opposite reaction
100
What is it called when dry ice becomes a vapor?
Sublimation
200
How is heat transferred
Conduction,convection,radiation
200
Chicken salad and mayo mixed together in what kind of mixture?
Heterogenous mixture
200
If you drop a bowling ball and a baseball at the same time, which hits the ground first and why?
Hit at the same time - gravity is the same
200
What is the initial movement of waves?
Kinetic energy
200
What is needed for the transfer of sound energy?
Vibration of air particles
300
How do you get salt out of water?
Evaporation
300
What is the mass of a bag that has 20 grams of vinegar added to 10 grams of baking soda?
30 grams
300
What is a variable?
A factor that is changed in an experiment.
300
What are opposing forces?
Pushing against each other
300
What is the difference between a dependent and independent variable?
Dependent variable is affected by the independent variable. The independent is controlled by a person.
400
What kind of energy is trapped inn the greenhouse effect?
Solar energy or Solar radiation
400
What composes a solid and a liquid?
Solid- molecules barely moving Liquids- take shape of container
400
What are Newtons 1st law?
Object in motion continues to move in straight line until force acts on it
400
What is it called when water is heated to a gas?
Evaporation or boiling point
400
What is the first step in the scientific method?
Identify the problem or ask a question.
500
What is a chemical change?
Chemical changes form and can't be changed back
500
Why can't an object be seen in the dark?
Have to have light to see color
500
What is Newtons 2nd law?
Force mass acceleration
500
What is it called when gas forms a liquid?
Condensation
500
What is a hypothesis?
A possible answer or educated guess based on information.
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