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Murrr4er [49]
3 years ago
7

An important rule for students to know when heating a test tube is to

Chemistry
1 answer:
Brrunno [24]3 years ago
5 0

Answer:

B .point the test tube away from others

Explanation:

Well in science your supposed to keep it away from you and others so the aroma doesnt harm your nose or anyone eles´s nose

Hoped I helped -\

Sleepy~

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This graduated cylinder has numbers representing milliliters. A student says that the volume of the liquid inside is 21.8 millil
GaryK [48]

Explanation:

The answer for this question depends on the type of meniscus in the cylinder. If it is an upright meniscus like in water, the reading should be taken at the bottom of the meniscus. However if it is an inverted meniscus like in mercury, the reading should be taken at the top of the meniscus.

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3 years ago
List and describe the three rock types in the rock cycle including two or more processes involved in the formation of each type
denis23 [38]

There are three rock types in the rock cycle including: igneous, sedimentary, and metamorphic rock.

<u>Explanation:</u>

Any solid or combination of minerals which naturally occurs is understood as a rock. It is classified by the contained minerals, its chemical composition and the manner it is made.

<u>Igneous Rocks:</u> It is generated by magma or lava being refrigerated and solidified. The magma may be produced from partial melting of established rocks, either in the mantle or crust of a planet. The melting is usually caused by one or more of three methods: temperature rise, pressure decrease, or composition transition.

<u>Sedimentary Rocks:</u> These forms that are developed by aggregation or deposition of tiny particles and eventual cementation of mineral or organic substances on the surface of the Earth's ocean floor or other water bodies. Sedimentation is the general term for mechanisms that cause settlement of such particles.

<u>Metamorphic Rocks:</u> These occur from the alteration of different rock types in a technique called metamorphism, which implies change of shape. The initial rock or protolith is heated where temperatures between 150 to 200 ° C and a pressure level of 100 megapascals (1,000 bar) or more induces significant physical or chemical changes.

8 0
3 years ago
How does this equation help you to understand acids and bases: H+(aq) + OH-(aq)
KATRIN_1 [288]

Answer:

C. It shows you that the formation of water is a reversible reaction, which contains hydrogen and hydroxide ions.

Explanation:

The equation is

H₂O(ℓ) ⇌ H⁺(aq) + OH⁻(aq)

It also shows that water can behave as either an acid or a base, because it can produce both H⁺ and OH⁻ ions.

A and B are both wrong. Although the statements are correct, they don't say anything about acids and bases.

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4 years ago
Which of the following methods is not used to locate underground oil reserves?
Ugo [173]
C.) Electrical Signals are not used <span>to locate underground oil reserves

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3 years ago
Why is the air along a coastline typically cooler than in other areas?
lara31 [8.8K]

Answer:

ocean heats up and cools down relatively slowly. Therefore, areas near the ocean generally stay cooler

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3 years ago
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