Can someone me !
a student compared some soccer players to the atoms in the liquid st...
Can someone me !
a student compared some soccer players to the atoms in the liquid state. which of the following activities were the soccer players most likely performing?
a-lining up next to each other
b-huddling around each other for the ball
c-running randomly in all directions
d-slowly jumping up and down in their places
two states of matter are described below.
state a: cannot be compressed and retains its shape
state b: highly compressible
which combination of the state and a substance in that state is correct?
a- state a = air; state b = neon
b-state a = water; state b = number cube
c-state a = water; state b = oxygen
d-state a = piece of metal; state b = air
if a chemical change has taken place, which of these is most likely true?
a-original substance can be easily recovered.
b-composition of a substance is the same.
c-a completely new substance is formed.
d-an easily reversible process has taken place.
over a period of time a student observed a small tadpole changing into a frog. which of the following explains the physical change that takes place in this growing frog?
a-the frog can change back into a tadpole.
b-the tadpole changes its shape and form.
c-the frog is made up of a different set of elements than the tadpole.
d-many reactions take place inside the tadpole as it changes into a frog.
which of these is an example of recombination of atoms to form newer molecules?
a-molding a wire of gold
b-hammering a piece of iron
c-tarnishing of a silver coin
d-rolling of a sheet of aluminum
which process changes substances into new substances with new properties?
a-chemical change
b-compressibility
c-malleability
d-physical change
judy kept 250 grams of juice in the freezer. what is most likely the mass of the frozen juice formed and why?
a-250 g, mass remains same during physical change of freezing
b-500 g, mass of ice is twice the mass of juice
c-250 g, mass is conserved when matter is destroyed to form ice
d-200 g, mass of frozen liquid is less than mass of the original liquid
anna heated 15 g of substance a to obtain 5 g of substance b, 4 g of substance c, and a certain amount of substance d. which statement is correct?
a-the mass of substance d was 10 g less than the mass of substance a.
b-the mass of substance d was 1 g greater than the mass of substance b.
c-the mass of substance a was equal to the total mass of substance c and substance d.
d-the mass of substance a was equal to the total mass of substance b and substance d.
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