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hammer [34]
3 years ago
15

Please answer correctly !!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
Rashid [163]3 years ago
5 0

Answer:

i dont have an answer for sure because it doesnt specify WHAT its energy chang occurs but i think its physical change

Explanation:

Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.

examples of chemical change:

burning a fire

boiling an egg

digestion

examples of physical change:

melting ice

rusting

breaking a pencil

hope i helped!!

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Why does such a small decrease in pH mean such a large increase in acidity?
den301095 [7]

Answer:

pH is an index of how many protons, or hydrogen ions (H+) are dissolved and free in a solution. The pH scale goes from 0 to 14. A fluid with a pH of 7 is neutral. Below 7, it is acidic; above 7, it is alkaline.

The more below or above 7 a solution is, the more acidic or alkaline it is. The scale is not linear—a drop from pH 8.2 to 8.1 indicates a 30 percent increase in acidity, or concentration of hydrogen ions; a drop from 8.1 to 7.9 indicates a 150 percent increase in acidity. Bottom line: Small-sounding changes in ocean pH are actually quite large and definitely in the direction of becoming less alkaline, which is the same as becoming more acidic.

If you think about it, we use descriptive words like this all the time. A person who stands 5’5” tall and weighs 300 pounds isn’t thin. If he loses 100 pounds, he still won’t be thin, but he will be thinner than he was before he went on the diet. (And we are more likely to comment that he’s looking trimmer than to say he’s not as fat as he used to be.)

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3 years ago
Phoebe removes frozen vegetables from the freezer to make herself a stir-fry. She’s in a bit of a hurry, so she immerses the pla
Alexxandr [17]
This is thermal conduction.
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4 years ago
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What is the damaging effect of sewage dumps on human health ?
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The sewage dumps were toxic so it would effect the air and cause many help issues especially with lungs.
4 0
3 years ago
What’s number 1, 2, 3 <br> Major grade 6th grade
Maslowich

Answer:

1 is B

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Explanation:

Hope you pass

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An ideal gas is in a sealed rigid container. The average kinetic energy of the gas molecules depends most on An ideal gas is in
sergejj [24]

Answer:

The temperature of the gas.

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