145 questions and answers in this section

Natural Sciences » Chemistry

Explain why bleach is a powerful disinfectant?

Explain why bleach is a powerful disinfectant?

Bleach is a disinfectant widely used in households, hospitals, and industries. Its chemical composition generally includes chlorine, water, and sodium hydroxide. The active ingredient in...

Read full answer

Explain why vinegar can clean certain surfaces.

Explain why vinegar can clean certain surfaces.

Vinegar is acidic because of its acetic acid content, which is the main component responsible for its cleaning power. The acetic acid in vinegar acts...

Read full answer

Explain why oxygen is necessary for combustion?

Explain why oxygen is necessary for combustion?

Combustion is a chemical process during which a substance reacts with an oxidizer to produce heat and light. In most cases, oxygen from the air...

Read full answer

Explain why fire burns and forms a flame.

Explain why fire burns and forms a flame.

Combustion is an exothermic chemical process that occurs when a fuel reacts with an oxidizer in the presence of heat to produce heat and light. The fuel...

Read full answer

Explain why does milk go bad when left at room temperature?

Explain why does milk go bad when left at room temperature?

Milk can spoil when left at room temperature due to the growth of bacteria present in the liquid. This alteration of milk is mainly caused...

Read full answer

Explain why does water freeze into forming crystals?

Explain why does water freeze into forming crystals?

Water is a molecule composed of two hydrogen atoms and one oxygen atom. Its chemical formula is H2O. The hydrogen atoms form an angle of...

Read full answer

Explain why vinegar removes stains?

Explain why vinegar removes stains?

Vinegar is acidic due to its content of acetic acid, a substance that gives it its unique properties. Acetic acid is a weak acid, which...

Read full answer

Explain why paper crumples more easily in one direction only?

Explain why paper crumples more easily in one direction only?

Possible reasons for the directional sensitivity of paper to creasing may be related to several factors. Among these, we can mention the orientation of cellulose...

Read full answer

Explain why soap helps clean dirt?

Explain why soap helps clean dirt?

Dirt is often made up of non-polar molecules, such as fats and oils. When these molecules come into contact with water, which is a polar...

Read full answer

Explain why metal rusts when exposed to moisture.

Explain why metal rusts when exposed to moisture.

The electrochemical potential of a metal is an intrinsic characteristic that influences its tendency to rust or corrode. This potential determines the metal's tendency to...

Read full answer