1.
Matter is anything that _______________ and ___________________.
Explanation
Matter is defined as anything that occupies space and has mass. This means that matter takes up physical space and has a measurable amount of mass. It includes everything around us, such as solids, liquids, and gases. This definition helps to differentiate matter from other concepts like energy or thoughts, which do not have physical properties like occupying space or having mass.
2.
Which of the following is not a matter?
Correct Answer
D. Shadow
Explanation
Shadow has no mass and does not occupy space.
3.
The three states of matter are
Correct Answer
solid, liquid and gas.
Explanation
The three states of matter are solid, liquid, and gas. These states describe the physical properties and behavior of substances. Solids have a definite shape and volume, with tightly packed particles. Liquids have a definite volume but take the shape of their container, with particles that are less tightly packed. Gases have neither a definite shape nor volume, as their particles are widely spaced and move freely. These three states cover the range of properties and behaviors exhibited by most substances, making them fundamental to the study of matter.
4.
What are the properties of solid?
Correct Answer
C. It has definite shape, definite volume and it cannot be compressed
Explanation
The correct answer is "It has definite shape, definite volume and it cannot be compressed." This answer accurately describes the properties of a solid. Solids have a fixed shape, meaning they maintain a specific form and do not easily change their arrangement of particles. They also have a definite volume, meaning they occupy a specific amount of space. Additionally, solids cannot be compressed easily, as their particles are closely packed together and do not easily compress or change their volume under normal conditions.
5.
When air is filled into a balloon, it becomes bigger because air occupies space.
Correct Answer
A. True
Explanation
When air is filled into a balloon, it becomes bigger because air occupies space. This is true because air molecules have mass and volume, and when they are pumped into a balloon, they fill up the empty space inside it, causing the balloon to expand and become bigger in size. The air molecules push against the walls of the balloon, creating pressure that stretches the rubber material and makes the balloon inflate.
6.
What property of air is displayed when a ping pong ball becomes dented?
Correct Answer
B. It shows that gas can be compressed
Explanation
When a ping pong ball becomes dented, it indicates that the gas inside the ball can be compressed. This is because when pressure is applied to the ball, the gas molecules are forced closer together, causing the ball to change shape. If the gas could not be compressed, the ball would not be able to dent and would maintain its original shape.
7.
What are the different states of water?
Correct Answer
Solid, Liquid and Gas , Solid, Liquid, Gas
Explanation
Water can exist in three different states: solid, liquid, and gas. In its solid state, water freezes and becomes ice. In its liquid state, water flows and takes the shape of its container. In its gaseous state, water vaporizes and becomes steam. Therefore, the correct answer is "Solid, Liquid, and Gas".
8.
Water experiences a change of state from liquid to solid-state. This process is called evaporation.
Correct Answer
B. False
Explanation
Liquid to solid state means that the water has become ice.
9.
When ice is added on the salt, what is its freezing point?
Correct Answer
C. -1 degrees
Explanation
Salt is an impurity, it will decrease/ increase the melting or boiling point of water.
10.
When water gains heat from the surroundings and changes into water vapour, ___________________ occurs.
Correct Answer
When water gains heat from the surroundings and changes into water vapour, evaporation occurs.
Explanation
The picture that your mother is boiling water. It increases in heat and after that, you realize that the water level decreases. This is because the water has evaporated to become water vapor.
11.
When a piece of ice is taken out from the freezer to a warmer place, it _________ (gains/loses) heat from its sourroundis. This process is called ____________.
Correct Answer
When a piece of ice is taken out from the freezer to a warmer place, it gains(gains/loses) heat from its sourroundis. This process is called melting.
Explanation
When a piece of ice is taken out from the freezer to a warmer place, it gains heat from its surroundings. This process is called melting.