Lesson 9 Reading One— What Kinds of Particles Do I Breathe, and

You have been thinking a lot about odors and air. If odors are part of the air, then you must breathe them in when you take a ______________.

• snooze

• breath

• drink

• shower

Odors could be on your “breathe in” list. You could also

put ___________ on your “breathe out” list.

• tastes

• odors

• feelings

• stories

Tags

NGSS.MS-LS1-8

Bad breath is what you ___________ when someone breathes out odor particles.

• taste

• smell

• feel

• talk about

Tags

NGSS.MS-LS1-8

Water particles from lakes and puddles also go into the air. When you breathe in air, you must also breathe in water particles, but air is only made of a small amount of __________.

• air

• water

• gases

• solids

Tags

NGSS.MS-ESS2-4

Most of the air is made up of nitrogen.

• yes

• no

When you breathe out onto a cold window or on a mirror, you see the window fog up. It up because what you breathe out has water in it.

• figs

• freezes

• frogs

• fogs

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

All animals breathe out carbon dioxide, so carbon dioxide is part of the air.

• yes

• no

Atoms of __________ make up a small fraction of air.

• argon

• bad stuff

• sugar

• salt

Molecules are made of two (or more) ____________ joined together.

• elements

• atoms

• air

• balloons

Tags

NGSS.MS-PS1-1

The atoms in a molecule stay together when the material changes states. __________________ do not come apart during phase changes.

• Moles

• Molecules

• Atoms

• Elements

Tags

NGSS.MS-PS1-1