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Ainat [17]
4 years ago
13

What's compound streak mean in science

Chemistry
1 answer:
Marysya12 [62]4 years ago
5 0
Streak is the color a solid substance leaves behind when it is used to scratch a white porcelain tile. This is often different than the apparent color of the substance upon first visual examination, and it is a more accurate way to identify a substance (usually rocks and minerals) because while external color often varies from sample to sample, streak color is consistent.
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What number is international system of units based on
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Which of the following subject areas contains questions that can be answered by science?
nikdorinn [45]

Answer:

Astronomy is a subject area which contain a question that can be answered by Science.

Explanation:

Hope This Helps?

3 0
4 years ago
How many oxygen atoms are in 10 formula units of AI2(SO4)3
Alisiya [41]

<em>Answer:</em>

  • 120 Oxygen atoms

<em>Data given</em>

  • Formula unit of AL2(SO4)3 =10
  • 1 formula unit of AL2(SO4)3  contain oxygen atoms = 12
  • 10 formula unit of AL2(SO4)3  contain oxygen atoms = 12 × 10
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3 0
4 years ago
Read 2 more answers
Define cation and anion. In which case are electrons gained? Lost?
inn [45]

Explanation:

A cation is a positively charged ion.

An anion is a negatively charged ion.

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  • In an anion, electrons are usually gained.

In an atom, the balance between the number of protons and electrons determine whether they become an anion or cation.

Protons are positively charged particles.

Electrons are negatively charged

 When an atom gains electrons, the number of electrons becomes more than that of protons. This leaves a net negative charge on the atom and it makes an anion.

 When an atom loses electrons, the number of protons becomes more than that of electrons. This leaves a net positive charge on the atom and makes a cation.

5 0
3 years ago
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