CHEMISTRY MIDDLE SCHOOL

At the top of the candle solid wax changes into liquid wax what is the name of the process

Answers

Answer 1
Answer:

At the top of the candle solid wax changes into liquid wax what is the name of the process is melting.

What do you mean by melting ?

Melting is the transformation of a solid into a liquid caused by the application of heat.

This process occurs at a fixed temperature known as the melting point in a pure crystalline solid; an impure solid generally melts over a range of temperatures below the melting point of the principal component.

A chemical reaction is required to burn a candle, which produces heat and light. As a result, energy is transformed from chemical energy to heat and light energy. As a result, the energy changes during candle combustion as chemical energy is converted to heat and light energy.

Thus, At the top of the candle solid wax changes into liquid wax what is the name of the process is melting.

To learn more about the melting, follow the link;

brainly.com/question/15873508

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Answer 2
Answer:

Answer:

Melting

Explanation:

solid to liquid

and freezing is when liquid changes back to solid

but candle wax doesn't freeze, it evaporates. The gaseous wax burns in oxygen to produce water, carbon dioxide, heat and light. The burning candle also produces carbon, in the form of the black soot we see on the spoon.


Related Questions

MIDDLE SCHOOL

Why lead carbonate is not reacted with sulphuric acid in the formation of carbon dioxide ​

Answers

Answer:

Lead carbonate is not reacted with sulphuric acid in the formation of carbon dioxide because lead is insoluble in water. The reason is that lead is non polar substance and water is polar solvent means it makes positive and negative poles. Only polar solute dissolve in polar solvent and non polar solute dissolve in non polar solvent. So that's why lead carbonate do not dissolve in water and makes a layer on the water.

Explanation:

COLLEGE

A chemist adds 380.0mL of a ×9.7510−4mM magnesium fluoride MgF2 solution to a reaction flask. Calculate the micromoles of magnesium fluoride the chemist has added to the flask. Round your answer to 3 significant digits.

Answers

Answer:

0.370 micromoles of magnesium fluoride the chemist has added to the flask.

Explanation:

Moles of  magnesium fluoride  = n

Volume of the solution = 380.0 mL = 0.380 L (1 mL = 0.001 L)

Molarity of the solution =

(1 mM = 0.001 M)

1 mole = micro mole

0.370 micromoles of magnesium fluoride the chemist has added to the flask.

HIGH SCHOOL

A standardized solution that is 0.0500 0.0500 M in Na + Na+ is necessary for a flame photometric determination of the element. How many grams of primary-standard-grade sodium carbonate are necessary to prepare 800.0 800.0 mL of this solution?

Answers

Answer:

2.12 grams of primary-standard-grade sodium carbonate are necessary to prepare 800.0 mL of this solution.

Explanation:

Molarity of sodium ions = = 0.0500 M

Moles of sodium ions = n

Volume of the solution = V = 800.0 mL = 0.800 L

1 mole sodium carbonates gives 2 moles of sodium ion and 1 mole of carbonate ions.

Then 0.04 moles of sodium ions will be obtained from:

of sodium m carbonation.

Mass of 0.02 moles of sodium carbonate = 0.02 mol × 106 g/mol= 2.12 g

2.12 grams of primary-standard-grade sodium carbonate are necessary to prepare 800.0 mL of this solution.

MIDDLE SCHOOL

A single atom of an element has 11. protons, 11. electrons, and 12 neutrons. Which element is it?

Answers

Answer:

Sodium (Na)

Explanation:

The atomic number (it's order in the periodic table) is the same as the number of protons. Since there are 11 protons, it is the 11th element. Referencing the periodic table, that is Sodium, represented by Na.

Answer: B

Explanation:

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