Answer :

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Answer and Explanation:

Solids:

We can name some chemical elements that in nature are solids at room temperature:

Aluminium (Al): it is a dultile metal with a color between silver and white.

Sulfur (S₈): it is a pale yellow solid.

Zinc (Zn): it is a metallic brittle solid.

Liquids:

Some substances that are liquids at room temperature are:

Water (H₂O): it is a subtance composed by 2 atoms of hydrogen and 1 atom of oxygen. It is a clear, limpid, odorless liquid.

Bromine (Br₂): it is a homogenoeus halogen which is liquid at room temperature. It has a color beteween red and brown.

Mercury (Hg): this heavy metal is liquid at room temperature.

Gases:

Hydrogen (H₂): it is a colorless, odorless and hightly inflammable gas.

Oxygen (O₂): a diatomic gas, without odor neither color, with an important role in biological proceesses.

Nitrogen (N₂): other diatomic gas, which is inert (it does not react easily).

pstnonsonjoku

A substance may exist as solid, liquid or gas at room temperature.

There are three states of matter;

  • Solid
  • Liquid
  • Gas

The particular state of matter in which a substance exists at room temperature depends on the magnitude of intermolecular interaction between the molecules of the substance.

The following are gases at room temperature;

  • Oxygen
  • Nitrogen
  • carbon dioxide

The following are liquids at room temperature;

  • Water
  • hydrochloric acid
  • sulfuric acid

The following are solids at room temperature;

  • Iodine
  • calcium carbonate
  • silver sulfide

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