Basic Knowledge Questions Test On Solid Liquid And Gas! Quiz

When a liquid turns into a solid, it undergoes a process called freezing. This occurs when the temperature of the liquid drops below its freezing point, causing the particles to slow down and come closer together, forming a solid structure. Freezing is the opposite of melting, where a solid turns into a liquid, and boiling, which is the process of a liquid turning into a gas.

Water boils at 100°C. This is the point at which water changes from a liquid to a gas, forming water vapor. The boiling point of water is influenced by atmospheric pressure, so at higher altitudes where the atmospheric pressure is lower, the boiling point of water is lower as well. However, at sea level, where the atmospheric pressure is standard, water boils at 100°C.

Salt dissolves in water because it is a polar compound. Water molecules are polar, meaning they have a positive and negative end. When salt is added to water, the positive end of the water molecules is attracted to the negative chloride ions in salt, while the negative end of the water molecules is attracted to the positive sodium ions in salt. These attractions cause the salt molecules to separate and disperse throughout the water, resulting in the dissolution of salt in water.

A solid does have a definite shape and volume. Unlike liquids and gases, solids maintain a fixed shape and volume because their particles are closely packed and have strong intermolecular forces. This allows them to resist changes in shape and size, making them retain their specific form and occupy a fixed amount of space. Therefore, the statement that a solid has no definite shape or volume is false.

The given answer is true because volume is indeed a measure of how much space matter occupies. It is a three-dimensional quantity that describes the amount of space an object or substance takes up. Volume is typically measured in cubic units such as cubic meters or cubic centimeters. So, the statement accurately represents the definition of volume.

A liquid has a definite volume because it takes up a specific amount of space, but it does not have a definite shape because it can flow and take the shape of its container. Unlike solids, which have a fixed shape, liquids can change their shape depending on the container they are in. Therefore, the correct answer is LIQUID.

The question asks whether pepper can be a solution. The correct answer is "NO" because pepper is not typically considered a solution. Pepper is a spice derived from the dried berries of the Piper nigrum plant and is commonly used as a seasoning or flavoring agent in cooking. It is not typically used as a solution to solve a problem or address a specific issue. Therefore, the correct answer is "NO".

Mass is the correct answer because it refers to the amount of matter in an object. It is a measure of the quantity of particles (atoms, molecules, etc.) that make up an object. Mass is often measured in grams or kilograms and is different from weight, which is the force exerted on an object due to gravity.

Gas particles do not move slow, in fact, they move very quickly. The kinetic theory of gases states that gas particles are in constant random motion, colliding with each other and the walls of their container. This motion is what gives gases their unique properties, such as their ability to fill any container they are placed in. Therefore, the statement that gas particles move slow is incorrect.

Chocolate milk is considered a mixture because it is made by combining two separate substances, milk and chocolate syrup. A mixture is defined as a combination of two or more substances that are not chemically bonded together and can be separated by physical means. In the case of chocolate milk, the milk and chocolate syrup can be easily separated by stirring or filtering, indicating that it is a mixture.