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Sergeu [11.5K]
4 years ago
13

What is the scientific term for rocks formed from magma?

Chemistry
2 answers:
mihalych1998 [28]4 years ago
8 0
I think it's D but not sure
ziro4ka [17]4 years ago
6 0
<h3><u>Answer;</u></h3>

<em>B. intrusive </em>

<h3><u>Explanation;</u></h3>
  • Igneous rocks are among the major types of rocks, that are formed when magma or molten rocks found on the underneath of the surface of the earth, rise up, cool down and then solidify.
  • Igneous rocks may either be extrusive or intrusive rocks.
  • <u><em>Intrusive rocks</em></u> are types of rocks that are formed when magma cools down and solidifies under the earth's surface, resulting to rocks.
  • <u><em>Extrusive rocks </em></u>results when magma solidifies over the surface of the earth.
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Ksivusya [100]

The reaction processes that lead to the two types of synthetic polymers are chain reaction polymerization and step reaction Polymerization.

<h3>What is Polymerization Reaction? </h3>

The chemical reaction which involves the addition of monomers to form higher molecular mass molecules is known as polymerization. There are two basically two types of polymerization, one is chain-reaction (or addition) and the other is step-reaction (or condensation) polymerization.

<h3>Chain-reaction (addition) polymerization</h3>

One of the most common and important types of polymer reactions is chain-reaction (addition) polymerization. This type of polymerization involves three step process including two chemical entities. The first which is known simply as a monomer. It is initially exists as simple units. Normally in all cases, the monomers must have at least one carbon-carbon double bond. Ethylene is one of the best known example of a monomer which is used to make a common polymer.

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learn more about Polymerization reaction:

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How many copper atoms are in a pure copper statue with a mass of 142kg
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142 kg in grams:

1 kg ---------- 1000 g
142 kg -------- ?

142 x 1000 / 1 => 142000 g 

Atomic mass Cu =  63.54 a.m.u

Therefore:

63.54 g ------------ 6.02x10²³ atoms
142000 g --------- ??

142000 x ( 6.02x10²³) / 63.54 =

8.54.10²⁸ / 63.54 => 1.34.10²⁷ atoms of Cu



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3 years ago
What does DNA instructions for making what
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Explanation:

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