Wnich action forms a different chemical substance?

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A

crushing a rock

B

burning a piece of wood

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mixing salt and pepper

D

melting an ice cube

Define isotope using mass number atomic number, number of protons, neutrons and electrons

How do you find the - Atomic number Atomic Mass protons electrons neutrons group period of an element?

How does temperature affect the solubility of most solids

At a temperature of 274k, the gas in a cylinder has a volume of 4.0 liters. If the volume of the gas decrease to 2.0 liters, what mus the temperature be for the gas pressure to remain constant?

A compound consists of 4.50 g of nitrogen for every 7.71 g of oxygen and has the same empirical and molecular formula identify the compound

If 1000. mL of linseed oil has a mass of 929 g, calculate the density of linseed oil.

Why is pure water not a conductor of electricity? A. Pure water has no free ions. B. Pure water has many dissolved solids. C. Pure water has few dissolved solids. D. Pure water has many free ions.

Why do the pH scale generally range from 0 to 14 in aqueous solution?

For measuring the volume of a liquid, beakers are generally: more accurate than graduated cylinders less accurate than graduated cylinders equally as accurate as graduated cylinders always used when highly accurate measurements of liquid volumes are

Identify the strongest attractive force present in the pure substances shown: london forces, dipole-dipole, hydrogen bonding, ion-dipole, or ionic attractions.