What distinguishes a substance from a mixture?
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Mixtures can be separated physically, while compounds cannot.
All of the following changes to a metal are physical changes EXCEPT
(A) Bending
,(B)Melting
(C) Rusting
(D)Polishing
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Rusting
a cake rises as it bakes because a chemical change causes ________ to be produced
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a gas
heterogeneous mixture
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not uniform in composition
the substances in an ________ mixture are evenly distributed throughout the mixture
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homogeneous
, which of the following is not a clue that a chemical change has occured?
(a) change in color
(b) production of a gas
(c) formation of a precipitate
(d) change in shape
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(d) change in shape
chemical reaction
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the process in which substances are changed into different substances
Which of the following are considered physical properties of a substance?
(a) color and odor
(b) malleability and hardness
(c) melting and boiling points
(d) all of the above
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(d) all of the above
Give this one a try later!
Mixtures can be separated physically, while compounds cannot.
All of the following changes to a metal are physical changes EXCEPT
(A) Bending
,(B)Melting
(C) Rusting
(D)Polishing
Give this one a try later!
Rusting
a cake rises as it bakes because a chemical change causes ________ to be produced
Give this one a try later!
a gas
heterogeneous mixture
Give this one a try later!
not uniform in composition
the substances in an ________ mixture are evenly distributed throughout the mixture
Give this one a try later!
homogeneous
, which of the following is not a clue that a chemical change has occured?
(a) change in color
(b) production of a gas
(c) formation of a precipitate
(d) change in shape
Give this one a try later!
(d) change in shape
chemical reaction
Give this one a try later!
the process in which substances are changed into different substances
Which of the following are considered physical properties of a substance?
(a) color and odor
(b) malleability and hardness
(c) melting and boiling points
(d) all of the above
Give this one a try later!
(d) all of the above
