Chemistry High School

How are crystals made? ​

Answers

Answer 1

Explanation:

Crystals often form in nature when liquids cool and start to harden. Certain molecules in the liquid gather together as they attempt to become stable. They do this in a uniform and repeating pattern that forms the crystal. In nature, crystals can form when liquid rock, called magma, cools.

Answer 2

Answer: Crystals often form in nature when liquids cool and start to harden. Certain molecules in the liquid gather together as they attempt to become stable. They do this in a uniform and repeating pattern that forms the crystal. In nature, crystals can form when liquid rock, called magma, cools.

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Related Questions

I need help with this question! Can someone answer it for me? thank you!

Answers

Answer:

One Valence Electron

Explanation:

It is classified as an alkali metal. Potassium atoms have 19 electrons and 19 protons with one valence electron in the outer shell. Potassium is considered chemically similar to sodium, the alkali metal above it on the periodic table. Under standard conditions potassium is a soft silvery-white metal.

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Samantha and Claire determined the mass and volume of a piece of metal to be 24.16 g and 3.22 mL respectively. Determine the density of the metal.

Answers

Answer:

7.5031055900621

Explanation:

D= M/V

Genesis lays an object on the table in a well-lighted room the object absorbs all visible light waves what color object does genesis see?

Answers

Answer:

The object Genesis sees is black.

Explanation:

The color an object reflects represents what the object's color is. For example, if a block reflects blue light, then only blue light is sent to our eyes, and hence we see the block as blue.

If an object absorbs all visible light waves, then, that means there's no visible light reflected, and we cannot see any color the object has. Hence, it is black in our eyes.

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23) Assuming STP, how many moles are in 30 L SO2?

Answers

Answer:

1.34 moles SO₂(g)

Explanation:

At STP 1 mole of any gas occupies 22.4 Liters. So, for 30 Liters ...

moles SO₂(g) = 30L/22.4L·mol⁻¹ = 1.34 moles SO₂(g)

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If 175.0g of nitrogen is reacted with 250.0g of hydrogen, what is the theoretical yield of the reaction? What is the excess reactant? What is the limiting reactant? Show your work.

Answers

Answer:

Nitrogen gas is the limiting reactant

Hydrogen gas is the excess reactant

The theoretical yield is 425 g of ammonia

Explanation:

Equation of reaction: 3H2 + N2 ---> 2NH3

From the equation of reaction, 3 moles of hydrogen gas reacts with 1 mole of nitrogen to produce 2 moles of ammonia gas.

Molar mass of hydrogen gas = 2.0 g

Molar mass of nitrogen gas = 14.0 g

Molar mass of ammonia gas = 17.0 g

Number of moles of hydrogen gas in 250 g = 250/2 = 125 moles

Number of moles of nitrogen gas in 175 g = 175/14 = 12.5 moles

Mole ratio of Hydrogen to Oxygen = 125/12.5 = 10 : 1

Therefore, nitrogen gas is the limiting reactant.

Hydrogen gas is the excess reactant

14 g of nitrogen gas produces 17 × 2 g of ammonia = 34 g of ammonia

175 g will produce (34 × 175)/14 = 425 g of ammonia

Therefore the theoretical yield is 425 g of ammonia

How can air pollution affect plants?

Answers

Answer:

yes air pollution can affect a plants health

Explanation:

what do punnet squares do

Answers

Answer:

The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. ... The diagram is used by biologists to determine the probability of an offspring having a particular genotype.

Explanation:

in biology it predicts the possible offspring provided the features of the mother or father

How does carbon (C) differ from silicon (Si)?
A) carbon has 1 less electron energy shell than silicon
B) carbon has 1 less electron than silicon
C) carbon has 8 more electron energy shells than silicon
D) carbon has 1 more proton energy shell than silicon​

Answers

Explanation:

carbon has 1 less electron energy shell than silicon

Carbon has 1 less electron energy shell than silicon. Hence, option A is correct.

What is an atom?

An atom is any particle of matter which contains at least one proton.

Carbon is a nonmetal but silicon is a metalloid. Carbon and silicon belong to the same group (group 14) of the periodic table. And have four electrons in the outer energy level. Both occur in two oxidation states, +2 and +4.

Hence, option A is correct.

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