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Sedbober [7]
3 years ago
14

Which describes how chemical changes are different from physical changes? (1 point) Chemical changes can be measured, but physic

al changes cannot. Chemical changes involve the formation of a new substance. Chemical changes release energy, but physical changes absorb energy. Chemical changes cannot be caused by oxygen.
Physics
2 answers:
In-s [12.5K]3 years ago
6 0

1) A chemical change is used by scientists to create new substances, and a physical change happens naturally. A chemical change results in a new substance being formed; whereas, a physical change will result in a different state of matter.

MissTica3 years ago
3 0

Answer:

Chemical changes involve the formation of a new substance.

Explanation:

The main difference between chemical and physical changes is the fact that chemical changes involve the formation of a new substance. When a physical change occurs, this does not lead to bonds being broken or formed. The properties of the elements involve do not change. This includes changes such as changes of state. On the other hand, a chemical change is one in which bonds are broken or formed. Therefore, the elements that are present are turned into a new substance.

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Answer:

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Two identical wind-up cars A and B are released. Car B has a 2 kilogram weight strapped to the back of the car. Which will have
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Car A would have a better average speed

Explanation:

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3 years ago
(a) How much work is required to lift a 35-kg object from the ground 3.0 m into the air? (b) How much gravitational potential en
V125BC [204]

Answer:

(a) work required to lift the object is 1029 J

(b) the gravitational potential energy gained by this object is 1029 J

Explanation:

Given;

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(a) work required to lift the object

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W = (mg) x h

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W = 1029 J

(b) the gravitational potential energy gained by this object is calculated as;

ΔP.E = Pf - Pi

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Which is the correct order that these theories emerged from earliest to latest
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Which statement explains how gravity and inertia work together?
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Explanation:

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