WHAT IN THE WORLD ARE WE MADE OF?! AN INTRODUCTION TO SOLIDS, LIQUIDS AND GASES STEPHANIE ROONEY

PAY ATTENTION: THERE WILL BE QUESTIONS! In this unit, we will learn about what objects are made of and how molecules affect an objects state of matter.

THINK, PAIR, SHARE! Turn to your neighbor and quietly discuss what you learned after watching the video. Be prepared to share.

PROPERTIES OF SOLIDS, LIQUIDS AND GASES

Water can be transformed into any state of matter. When in ice form, it is a solid, as water, it is a liquid and as water vapor, it is a gas. The phases of water change based on heating and cooling. For example, when you put liquid water in your freezer, it becomes a solid!

As you can see in this diagram, the molecules change when water is heated or cooled. When the molecules are packed tighter together, water becomes ice. When water is heated up, like when making pasta, it turns into water vapor (a gas) and the molecules are very spread out.

HERE ARE A FEW QUESTIONS TO TEST YOUR SKILLS…

WHICH STATE TAKES THE SHAPE OF ITS CONTAINER? Solid Liquid Gas Both B & C

WHAT IS THE STATE OF MATTER OF THESE ITEMS?

WHICH STATEMENT IS TRUE? There are 4 states of matter. Solid objects take the shape of their container. Heating and cooling can change the properties of substances. You cannot use your senses to determine an objects state of matter.

SOLIDS HAVE WHICH OF THE FOLLOWING? Definite shape Tight molecular arrangement Fixed volume All of the above

COMPARED TO A GASES PARTICLES, A LIQUIDS PARTICLES ARE: Spread further apart. Packed tighter together. The same tension as a gas None of the above

SUMMARY As a result, students should have a very brief understanding of the unit we will be beginning. They will learn the basic properties of the three states of matter and understand that molecules and phases are all around us and make up every single object in the world. They will also learn that heating and cooling can change the state an object is in because of the molecular movement. The purpose of this short powerpoint is to get them excited and interested for what is to come. It will also help me gain somewhat of an understanding of what the students already know.

STANDARDS SC.2.P.8.3 – Recognize that solids have a definite shape and that liquids and gases take the shape of their container. SC.2.P.8.2 – Identify objects and materials as solid, liquid, or gas.

CORRECT! Great job. Let’s move to the next question.

THAT IS INCORRECT Let’s think about it and try again.