MCQs

Explanation
Temperature is the measurement of the hotness or coldness of an object or substance. It is a physical property that is usually measured in units of Celsius (°C), Fahrenheit (°F), or Kelvin (K).

Explanation
When you put sand, salt, and sawdust in a glass of water, the following things happen: Salt dissolves in water, meaning it breaks down into individual particles that are distributed evenly throughout the water. Sand sinks to the bottom of the glass, because it is denser than water and cannot float or dissolve in it. Sawdust floats on top of the water, because it is less dense than water and is able to remain suspended on the surface.

Explanation
The process of separating solute and solvent from a mixture is generally referred to as Filtration . Filtration is used to separate an insoluble solid (solute) from a liquid (solvent) by passing the mixture through a filter.

Explanation
Filtration is the process of separating an insoluble solid from a liquid by passing the mixture through a filter paper or a porous material. The solid particles are retained by the filter. While the liquid passes through, resulting in a clear separation of the two.

Explanation
Decantation is the process of carefully pouring a liquid from one container to another, leaving the solid particles that have settled at the bottom of the original container behind. This process is used to separate a liquid from a solid, without disturbing the solid.

Explanation
Water (H2O) is a compound made up of two hydrogen atoms and one oxygen atom. It is a chemical combination of two different elements, which is the definition of a compound.

Explanation
A solution is a type of mixture that is homogeneous , meaning it has a uniform composition and properties throughout. It is a mixture of two or more substances, where one substance (the solute) is dissolved in another substance (the solvent).

Explanation
Liquids take the shape of a container because they have a fixed volume but no fixed shape . They conform to the shape of the container they are placed in.

Explanation
Solids, liquids, and gases can mix together to form a mixture. Which is a physical combination of two or more substances in which each substance retains its chemical properties.

Explanation
Gases are the state of matter that takes both the shape and volume of a container they are placed in. They expand to fill the container and conform to its shape. Liquids , take the shape of a container but maintain their own volume. Solids maintain both their shape and volume , regardless of the container they are placed in.