_____ is measured by the force required to move an object times the distance it moves it.

Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, and its apparent distance from the Sun as viewed from Earth never exceeds 28°. This proximity to the Sun means the planet can only be seen near the western horizon after sunset or the eastern horizon before sunrise, usually in twilight.

Explanation:

3 0

3 years ago

How can you distinguish between a physical change and a chemical change?

AleksAgata [21]

Answer:

Physical Change

When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.
Physical change is a temporary change.
A Physical change affects only physical properties i.e. shape, size, etc.
A physical change involves very little to no absorption of energy.
Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. .
In a physical change, no new substance is formed.
Physical change is easily reversible i.e original substance can be recovered.

Chemical Change

When a substance undergoes a chemical change, its molecular composition is changed entirely. Thus, chemical changes involve the formation of new substances.
.A chemical change is a permanent change.
Chemical change both physical and chemical properties of the substance including its composition
During a chemical reaction, absorption and evolution of energy take place.
A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
A chemical change is always accompanied by one or more new substance(s).
Chemical changes are irreversible i.e. original substance cannot be recovered.

8 0

3 years ago

Kichi made a table to identify where she might find acids and bases in her house based on their common uses.

sineoko [7]

The answer is: Ammonium hydroxide would be found in the pantry because it is found in vinegar.

Ammonim hydroxide (NH₄OH) is base and vinegar is acid.

pH of ammonium hydroxide is greater than 7 and vinegar has pH less than 7.

Ammonium hydroxide is a smelling, colorless liquid.

It is used as cleaning product, disinfectants and stain treaters.

Household ammonia contains 5-10% ammonium hydroxide.

5 0

3 years ago

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