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Worksheets7th grade science review
Total questions: 22
Worksheet time: 11mins
when something changes from liquid to gas the phase change is called
sublimation
freezing
evaporation
condensation
chemical or physical
boiling water
chemical
physical
where are the metalloids on the periodic table
on the left side of the periodic table
on the zigzag line
on the right side of the periodic table
what is the equation to find density
D=Mass x Volume
D=Mass/Volume
D=volume/Mass
D=volumex Speed
what is a compound
something that is chemically combined
things that are mixed together
A element
I don't know
what is a example of a element
water
salt
carbon dioxide
helium
where are the metals on the periodic table
along the zigzag line
on the right of the Periodic table
on the left of the periodic gym
no metals are on it
something that changes from a liquid to a solid is called
freezes
condensation
precipitation
none of the above
chemical or physical
Dissolving salt in water
physical
chemical
what is a example of a compound
hydrogen
copper
oxygen
water
what is it called when a solid changes to a gas
melting
evaporation
freezing
sublimation
what type of energy does this picture show
kinetic
potential
thermal
speed
An object at rest will stay at rest, and a object in motion will remain in motion unless acted by a unbalanced force
newton's 4th law
newton's 2nd law
Newton's 1st law
newton's 3rd law
what simple machine is this
wedge
wheel and axle
lever
screw
if a object density is .10g/cm3 will it sink or float in water
float
sink
what type of energy does this picture show
kinetic
potential
The mass of a cube is 18.8 with a volume of 15.6 wil this cube sink or float in water, what best explains your thinking.
float because the density is .01 which is less than 1
sink because the density is 1.2 which is greater than 1
it will stay in the middle because the density it half of the waters density
sink because the density is 1.2
is sublimation adding or subtracting energy
adding
subtracting
Is condensation adding or subtracting energy
subtracting
adding
What is newtons third law
a push or pull exerted on a object
an object at rest will stay at rest , and a object will stay in motion unless acted upon a unbalanced force
for every action there is a equal and opposite reaction
The net force on a object is equal to the product of its mass and acceleration
Is salt a compound or element
compound
element
chemical or physical?
dissolving salt in water
chemical
physical
