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Irina18 [472]
2 years ago
8

A beach ball and a bowling ball were sitting on a shelf. Someone bumped the shelf and the bowling ball and beach ball rolled off

Chemistry
1 answer:
elixir [45]2 years ago
4 0

Answer: i think its b

Explanation:

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Classify each of the following changes as Physical or Chemical:
ddd [48]

Explanation:

Physical changes are the changes that does not lead to any change in chemical composition of a substance.

For example, mass, density, volume are all physical changes.

On the other hand, a change that leads to formation of a new compound by changing the chemical composition of reactants or combining atoms is known as a chemical change.

For example, combustion, toxicity, reactivity etc are all chemical changes.

Therefore, given changes are identified as follows.

  • Coal burning : It is a combustion reaction. Hence, it is a chemical change.
  • Ice melting : Physical state of water changes from solid to liquid. Hence, it is a physical change.
  • mixing chocolate syrup with milk : No new compound is forming as there is no chemical reaction occurring. Hence, it is also a physical change.
  • explosion of a firecracker : It shows reactivity of fire cracker. Hence, it is a chemical reaction.
  • magnetizing of a screwdriver : It shows physical attraction between the magnet and screwdriver. Hence, it is a physical change.

6 0
3 years ago
What happens to solubility when the solute is crushed before adding to water
marusya05 [52]
It will dissolve faster as the surface area is more so more particles collide ---> faster dissolving
6 0
3 years ago
Will mark brainliest!!
olga2289 [7]

Answer:

I think its B im not sure

but i hope this helps

6 0
2 years ago
What is the speed of a man walking for 30 meters and he walked for 5 seconds ​
aliya0001 [1]

Answer:

<h2>6 m/s</h2>

Explanation:

The speed of the man can be found by using the formula

v =  \frac{d}{t}  \\

d is the distance

t is the time taken

From the question we have

v =  \frac{30}{5}  \\

We have the final answer as

<h3>6 m/s</h3>

Hope this helps you

8 0
3 years ago
Climate is the __________________ average weather conditions that occur in a particular region.
masya89 [10]

Explanation:

Climate is the period of time average weather condition which occurs at a place

6 0
2 years ago
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