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alexandr1967 [171]
3 years ago
5

Ppm is used to describe very small amounts of substance?

Chemistry
1 answer:
tekilochka [14]3 years ago
8 0

parts per million (ppm), parts per billion (ppb) and parts per trillion (ppt) are the most commonly used terms to describe very small amounts of substances. a ppm of a chemical in water means that, in a million units of water, there would only be one unit of the chemical.

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Describe how plants might be affected if the inter molecular forces in water decreased? i need asap!
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what are substances that cannot be broken down into simpler substances? elements elements protons protons compounds compounds mo
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2 years ago
All carbon ato ms have atomic number 6 but some have mass number 12 and others have mass number 14.what is a) the same b) differ
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Answer:

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2) The two isotopes have the same number of electrons in their orbit

3)The basic chemical properties of the two isotopes are the same

b) The differences in their structure are;

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The atomic number is the number of protons in the nucleus of an atom

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The answer to question 8 is
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