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amid [387]
2 years ago
15

BJECTIVE TYPE QUESTIONS

Chemistry
1 answer:
8090 [49]2 years ago
4 0

Answer:

1.Physical change

2. Chemical change

3. Heat

4.photosynthesis

5. composition

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What describes a mixture
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a mixture is a material made up of two or more different substances which are physically combined.

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A gas occupies a volume of 160 ml at 36° C and 970mm Hg. What is the volume at STP?
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2 years ago
Could someone explain what oxidation numbers are and what these questions are asking of me?
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The oxidation state, sometimes referred to as oxidation number, describes the degree of oxidation of an atom in a chemical compound.

<u>Explanation:</u>

The oxidation number of an atom is the charge that atom would have if the compound was composed of ions. 1. The oxidation number of an atom is zero in a neutral substance that contains atoms of only one element. The oxidation number of simple ions is equal to the charge on the ion.

The oxidation number of a mono atomic ion equals the charge of the ion. The oxidation number of H is +1, but it is -1 in when combined with less electro negative elements. The oxidation number of O in compounds is usually -2, but it is -1 in peroxides. The oxidation number of a Group 1 element in a compound is +1.

6 0
3 years ago
Part B Change the distance of the electron from the center position as it moves up and down. What relationship do you notice bet
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Explanation:

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Read 2 more answers
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