SRG 2 Chemistry 2024

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that in a chemical reaction, the mass of the reactants is equal to the mass of the products. This means that matter cannot be created or destroyed.

Front

What is condensation in terms of phase change?

Back

Condensation is the process by which a gas turns into a liquid when it cools down. It occurs when the temperature drops to the condensation point.

Front

What are the three main phases of matter?

Back

The three main phases of matter are solid, liquid, and gas. Solids have a definite shape and volume, liquids have a definite volume but take the shape of their container, and gases have neither a definite shape nor volume.

Front

What are electrons?

Back

Electrons are negatively charged subatomic particles that orbit the nucleus of an atom. They play a key role in chemical bonding and reactions.

Front

What is a chemical change?

Back

A chemical change is a process that involves the transformation of one or more substances into different substances with new chemical properties.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom. It has no electric charge and contributes to the mass of the atom.

Front

What is the boiling point?

Back

The boiling point is the temperature at which a liquid turns into a gas. It varies for different substances.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form or appearance of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an atom?

Back

An atom is the basic unit of matter, consisting of a nucleus made of protons and neutrons, surrounded by electrons.

Front

What is a reactant?

Back

A reactant is a substance that undergoes a chemical change in a reaction. It is present at the start of the reaction.