Easy 7th grade chemistry qs?
1) At room temperature, which element has a definite shape and volume?
1.Ag
2.Hg
3.Ne
4.Xe
2) Which set of properties does a substance such as helium have?
1.definite shape and definite volume
2.definite shape but no definite volume
3.no definite shape but definite volume
4.no definite shape and no definite volume
3) Iron pyrite looks so much like gold, it is known as fool’s gold. Which physical property did prospectors use to tell the difference between iron pyrite and gold?
1.phase
2.color
3.density
4.solubility
4) Which of the following involves mainly a physical change?
1.gasoline powering a car engine
2.an iron nail rusting
3.getting a suntan
4.the formation of a pothole
Update:lmfao who do i pick for best answer?? and neway the thing is over.
Comments
LOL
maliha i am NOT helping youhhh
:P
OMG, we're also learning this ****!!! :O
:P
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