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3 years ago

Describe the difference between physical and chemical changes in terms of what happens to the matter

1 answer:

6 0

A physical change means that the matter will remain the same, let's say you take a piece of paper and tear it in half, it's still paper. The difference with chemical changes is, the matter changes state; now let's say you take that piece of paper and light it on fire, it's state changes to ash.

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Combustion reaction of ammonia

geniusboy [140]

It produces nitrogen gas and water
4NH3+3O2+heat 2N2+6H 2O

4 0

3 years ago

To produce large tomatoes that are resistant to cracking and splitting some seeds companies use the pollen from one variety of t

rodikova [14]

Answer:

cross pollination

Explanation:

is when two types of plants are mixed to create a better or hardier plant

4 0

3 years ago

Which compound in each pair is more soluble in water?(b) Calcium phosphate or magnesium phosphate

Sidana [21]

<u>larger is the value of </u> $Ksp$ <u> the higher will the solubility of solid in water.</u>

What is called compound?

In chemistry, a compound is a substance made up of two or more different chemical elements combined in a fixed ratio.
When the elements come together, they react with each other and form chemical bonds that are difficult to break.
These bonds form as a result of sharing or exchanging electrons between atoms.

The equation for the dissociation of a solid MX in water is given below

MX(s) ⇄ Mⁿ⁺(aq) + Xⁿ⁻ (aq)

Assume s be the solubility of MX in pure water, then the equilibrium concentrations of ions are

[ Mⁿ⁺] = s

[ Xⁿ⁻ ] = s

The expression for the solubility product constant ( $Ksp$ ) is as follows

$Ksp$ = [ Mⁿ⁺] [ Xⁿ⁻ ]

= s²

That is, larger is the value of $Ksp$ the higher will the solubility of solid in water.

Learn more about compound

brainly.com/question/13516179

#SPJ4

6 0

2 years ago

Which two cell components deal with the same kind of chemical substance ( lipid, protein, enzyme, and so on)

geniusboy [140]

Answer:

Cell membrane and cytoplasm

Explanation:

Cell membrane is the layer that surronds the cell and it is made up of lipids and proteins. It is made up of a kind of fatty acids based lipids i.e phospholipids and sterols.

Cytoplasm is a thick fluid that is found in the cell membranes. It acts as buffer and protect cells organelles and DNA from damage. It is made up of water, p, lipids, proteins, inorganic salts, nucleic acids.

6 0

3 years ago

16. Two identical beakers containing water, which have not yet been placed in the sun, are shown below. х Y If both beakers are

Tamiku [17]

None sorry I can’t I 8558993

5 0

3 years ago