5 - PS1.A - Matter is Everywhere - FINAL (WND 1-3-2014)

DCI: PS1.A (A) Structure and Property of Matter – Matter of any types can be subdivided into particles that are too small to see, but even then the matter still exists and can be detected by other means. A model that shows that gasses are made from matter particles that are too small to see and are moving freely around in space can explain many observations, including the inflation and shape of a balloon; the effects of air on larger particles or objects.

 PE: 5-PS1-1 Develop a model to describe that matter is made of particles too small to be seen.

[Clarification Statement: Examples of evidence could include adding air to expand a basketball, compressing air in a syringe, dissolving sugar in water, and evaporating salt water.] [Assessment Boundary: Assessment does not include the atomic-scale mechanism of evaporation and condensation or defining the unseen particles.]

The ideas we see in this standard are: 

- matter can be subdivided into parts that are too small to see

- even when it is too small to see, matter can still be detected by other means

- a model that shows that gasses are, indeed, matter can explain many observations, including the inflation and shape of a balloon. 

Possible Question Starters: 

"Which of the following would provide the best evidence that air is made up of matter?"

correct answer - comparing the mass of an empty balloon to an inflated one 

incorrect answer - measuring the salt left behind after evaporating salt water

"Which of the following is true about the particles that make up matter?"

correct answer - they are too small to see with just our eyes

incorrect answer - they can only be found in solid substances