1. Describe the movement of the particles in the air. 2. Choose two different particles found in the air. Explain how they are different and how they are the same.

3. Describe air using the terms: mixture, atoms, and molecules.

4. What is one source of CO2 ?

5. Describe the relationship between atoms and molecules.

6. Is the composition of air consistent? Explain your thinking.

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic