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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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svlad2 [7]

Answer:

A.The sound becomes louder.

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Louder the sound it will travel long.

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3 years ago
Sugar dissolving in warm water is chemical or phyiscal change
BlackZzzverrR [31]
Hey there! Great question;) Answer:Physical change Explanation: When sugar mixes with water, at the end, the chemical formulas are the same. Nothing has changed! I hope this helps;)
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What is the role of meteorites in the formation of life?
CaHeK987 [17]

Answer:

Meteorites are consensually considered to be involved in the origin of life on this Planet for several functions and at different levels: (i) as providers of impact energy during their passage through the atmosphere; (ii) as agents of geodynamics, intended both as starters of the Earth’s tectonics and as activators of local hydrothermal systems upon their fall; (iii) as sources of organic materials, at varying levels of limited complexity; and (iv) as catalysts.

Explanation:

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3 years ago
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Marat540 [252]

hydrogen and oxygen atoms

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4 0
3 years ago
chlorine has 7 outer energy level electrons and argon has 8. what is the difference in the reactivity of these two elements?
Lunna [17]
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6 0
3 years ago
Read 2 more answers
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