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gregori [183]
3 years ago
12

Which statement best describes a physical change

Biology
1 answer:
saw5 [17]3 years ago
4 0

A change in which no new substance is formed is called a physical change.

Examples: Crushing a can, Melting an ice cube, Boiling water, Breaking glass, Dissolving sugar in water, Shredding paper, and Chopping wood.

All of these examples may involve a change in shape, form, or appearance, but it DOES NOT involve a change in the molecule structure.

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3 years ago
Why is it difficult to evaporate seawater?
Alika [10]

Answer: Different liquids will evaporate differently depending on the force of attraction between the molecules of the liquid. The weaker the force of attraction the higher the rate of evaporation and vice versa.

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2 years ago
What do the following two equations represent?<br> 5x +y = 3<br> . 10x + 2y = -6
cupoosta [38]

Answer:

Choose distinct parallel lines.

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They represent two parallel lines. The slopes are going to be the same in each line . Put the x value on the opposite side of the equal sign.

y = - 5x + 3           The slope is - 5

10x + 2y = - 6        Subtract 10x from both sides

2y = - 10x - 6         Divide by 2

y = -10x/2 - 6/2

y =-5x - 3

That minus three is the problem. You have 2 different y intercepts. That means that you have 2 parallel lines.

8 0
2 years ago
Within what brain region would damage be most likely to disrupt your ability to skip rope? your ability to sense tastes or sound
Vlada [557]

There are so many examples for that in different areas, like organic germanium compounds experiment carried out in our lab recently.

Here's one link: http://www.alfa-chemistry.com/products/organic-germanium-24.htm


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