What is Matter? Definition: matter anything that has

What is Matter? Definition: matter  anything that has

What is Matter? Definition: matter anything that has mass and volume. >All matter takes up space. Matter can be described as being tangible You can feel it and interact with

it. Some things that are NOT matter: Sound, Light & Heat The States of Matter Solid

Definition: solid state a state of matter in which a substance has a definite shape and volume. Liquid

>Definition: liquid a state of matter that has a definite volume, but no definite shape. Remember that VOLUME tells how much space something takes up. Gas >Definition: gas a state of matter

in which the particles have no definite shape or volume. The particles of a gas are not held together, and can separate. This is why a gas can expand or contract! Changes of State

Matter has the ability to switch between states under certain circumstances. >We call them state changes. >State changes are physical changes!

There are 5 different changes that can take place in matter. State changes occur as matter gains or loses thermal (heat) energy. >In other words, matter can change its state as its temperature changes.

How matter becomes a solid: Definition: freezing a state change in which a liquid loses thermal energy to becomes a solid. >Matter must always LOSE energy to become a solid. >Definition: condensation the schange in which a gas loses

thermalIf matter wants to become a liquid, it has 2 options: >It can gain thermal energy if it is a solid. >Or it can lose thermal energy if its a gas. >Definition: melting the state change in which a solid becomes a

liquid by gaining thermal energy. energy to become liquid. Now its time to look at gases. >Definition: evaporation the s-change in which a liquid gains energy to become a gas. >Evaporation causes your hands to dry after wetting them.

>It also causes clouds and weather to form! If a solid wants to become a gas >Definition: sublimation the schange in which a solid gains thermal energy to become a gas without melting. >Dry Ice is frozen carbon dioxideit turns straight into a

gas. Physical vs. Chemical Changes Definition:Physical Change- Is when Matter is cut, broken, crushed, dissolved,or evaporated. >Example: Melting a cube of sugar. Definition: Chemical Change-Happen

on a much smaller scale between molecules not seen where the matter changes from one type of matter to another. >Example: Burning a cube of sugar. Exothermic vs. Endothermic Processes

They can be physical changes to matter or chemical changes to matter. Definition: Exothermic- Energy in the form of heat is released from the matter to cause a change. >Examples: Gas to a liquid to a solid Definition: Endothermic- Energy in the form of heat is absorbed by the matter to

cause a change. >Example: Solid to a liquid to a gas

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