1. Which of the following statements is TRUE?

Chemistry

1 answer:

Len [333]3 years ago

8 0

Answer:

b. All rocks are made of minerals.

Explanation:

A rock is a mixture of two or more minerals. It does not usually have a specific shape. Granite consists of several different minerals.

A mineral has a specific composition in which the atoms occupy positions in a crystal lattice. Minerals like halite usually have a characteristic crystal shape.

Thus, all rocks are made of minerals, but minerals are not made of rocks.

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Check the statements that are accurate. Check all of the boxes that apply. Before Thomson’s experiments, scientists accepted tha

elixir [45]

Answer 1) It is incorrect.

Explanation : For the statement;

Thomson did experiments with cathode ray tubes to show that all atoms contain tiny negatively charged subatomic particles called as electrons.

So the statement should be like this:
AFTER the Thomson’s experiments, scientists accepted that the atom was made up of smaller particles.

Answer 2) This is correct.

Explanation : Rutherford was the scientist who discovered that atoms has volume is because of the empty spaces inside it. He did the gold foil experiments to prove this and he was successful in doing this by concluding that tiny dense empty places are occupied by positively charged nucleus.

Answer 3) This is Correct.

Explanation : After Thomson and Rutherford, Millikan also performed an experiment to prove that an atom contains a small positively charged nucleus which is usually surrounded by negatively charged electrons by his oil drop experiment.

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4 years ago

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3 years ago

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