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nlexa [21]
3 years ago
14

1. Which of the following pairs of atoms are isotopes?

Chemistry
1 answer:
Bogdan [553]3 years ago
5 0

Answer:

Isotopes of an element are atoms of the same element with same number of protons but different number of neutrons. Only choice (b) has 2 atoms of X with 6 protons and 8 and 6 neutrons respectively.

Explanation:

b) is the answer

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What branch of chemistry is most concerned with the study of carbon compounds
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Answer:

Organic chemistry

Explanation:

Organic material like alcohols and esters are composed mostly of carbon structures, hence the branch is referred to as organic chemistry

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4 years ago
In matter results in a change in its identity and properties.
FrozenT [24]

Answer:

The chemical change in matter is results in a change in its identity and properties.

Explanation:

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The chemical change change in matter lead to lost its identity and properties.

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible

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Example:

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The reaction of Hydrogen and oxygen:  

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7 0
3 years ago
Picking up a hot coal is an example of what type of heat transfer?
Pavlova-9 [17]
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5 0
3 years ago
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Although chemical digestion occurs throughout the digestive system, it mostly occurs in the A esophagus and stomach
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What is the name given to the ions of the halogens on the periodic table?
WARRIOR [948]

Answer:

halides

Explanation:

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