3rd Grade Science Matter Worksheets

3rd grade science matter worksheets provide young learners with an engaging and interactive way to explore the fascinating world of substances and their properties. These worksheets cover various topics related to matter, from identifying different states of matter to understanding the concept of physical and chemical changes. With a focus on clarity and simplicity, these worksheets are designed to help third graders grasp key scientific concepts effortlessly and build a strong foundation for future learning.

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What is matter?

Matter is anything that takes up space and has mass, considered to be composed of atoms and molecules. It can exist in various states, such as solid, liquid, or gas, and is fundamental to the physical world as it makes up everything around us, including living organisms, objects, and substances.

What are the three states of matter?

The three states of matter are solid, liquid, and gas.

What is a solid?

A solid is a state of matter characterized by particles that are closely packed together in a fixed arrangement, giving the substance a definite shape and volume. Solids have a strong intermolecular force that holds the particles in place, resulting in a rigid structure. Examples of solids include ice, wood, and metals.

Give an example of a liquid.

Water is an example of a liquid.

What are the properties of a gas?

Gases do not have a definite shape or volume, they expand to fill the container they are in, and they are easily compressible. Gases have low densities compared to liquids and solids, they have the ability to diffuse and mix with other gases, and their properties are influenced by temperature and pressure. Additionally, gases are able to undergo rapid and random motion.

Provide an example of a gas.

Oxygen is an example of a gas.

What is the difference between physical and chemical changes in matter?

Physical changes in matter involve changes in appearance, shape, or state without altering the chemical composition of the substance, such as melting, boiling, or dissolving. On the other hand, chemical changes in matter involve the rearrangement of atoms and the formation of new substances with different chemical properties, such as rusting, burning, or cooking. Essentially, physical changes are reversible and do not create new substances, while chemical changes are irreversible and result in the formation of new substances.

What is the process of changing a solid to a liquid called?

The process of changing a solid to a liquid is called melting.

What happens to matter when it freezes?

When matter freezes, its particles slow down and come closer together, forming a more ordered and structured arrangement. This decrease in kinetic energy causes the substance to transition from a liquid state to a solid state, resulting in the formation of a solid with a distinct shape and volume. As the temperature decreases further, the particles move even closer together, leading to a more rigid and fixed structure, characteristic of a solid.

What happens to matter when it evaporates?

When matter evaporates, it changes from a liquid state to a gaseous state as its molecules gain enough energy to break free from the attractions that hold them together. Essentially, the molecules move further apart and mix in with the surrounding air, forming a vapor or gas. This process typically occurs when the substance is heated, allowing the molecules to overcome the intermolecular forces and escape into the air.