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1. what are si unit and number for mass in the following statement? an 85-pound boy throws a 5 kilogram ball 8 meters ahead of him. it takes the ball 6 seconds to fall to the ground.
a- 8 meters
b- 85 pounds
c- 5 kilograms
d- 6 seconds
2. which of the following are areas of physical science?
a- biology and chemistry
b- chemistry and physics
c- physics and astronomy
d- all of the above
3. two variables are indirectly proportional. this
a- one variable increases, which causes the other variable to increase.
b- one variable increases, which causes the other variable to decrease.
c- both variables are constant
d- none of the above
4. true or false: science and technology are not related.
true
false
5. which of these units is the longest?
a- centimeter
b- kilometer
c- millimeter
d- meter
6. when metal is heated, it can be molded into different shapes. metal is
a- viscous
b- flammable
c-malleable
d- hard
7. all pure
a- contain only one type of atom
b- can be broken down into simpler substances
c- cannot be broken down into simpler compositions
d- have a fixed composition
8. charles's law
a- when temperature increases volume increases.
b- when temperature decreases, volume increases.
c- when pressure decreases, volume increases.
d- when pressure decreases, volume decreases.
9. all of the following are elements
a- sugar
b- aluminum
c- hydrogen
d- iron
10. what is the atomic number of arsenic?
a-200
b-33
c-205
d-75
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