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Usimov [2.4K]
3 years ago
10

Since precambrian time, ending about 544 million years ago, time on earth has been divided into three major

Chemistry
2 answers:
Aleonysh [2.5K]3 years ago
8 0

the answer  to this question is  eras


kati45 [8]3 years ago
6 0
The earth is now three biomes:
land
sky
sea.
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Can you think of other solutions that might be<br> acidic?
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2 years ago
Which of the following is true about a carbonated soft drink?
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3 years ago
Write a hypothesis about the pH level of common household solutions based on what you know about their physical and chemical pro
docker41 [41]

If pH is less than seven (pH<7), solution is acidic.

If pH is equal seven (pH = 7), solution is neutral.  

If pH is greater than seven (pH > 7), solution is basic.  

Some examples:

1) Acidic - gastric juices pH 1, lemon juice pH 2.2, tomato juice pH 4.

2) Neutral - salt solution pH 7.

3) Alkaline - baking soda pH 9, bleach pH 13.

pH is a numeric scale used to specify the acidity or basicity of an aqueous solution.



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2 years ago
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