You just explored pressure. now test your understanding.

a circus performer on a pair of stilts exerts a pressure of 32 kpa on the ground. if the performer stands on one stilt, what pressure does the stilt exert on the ground?

a. we cannot solve the problem because we are not given the force.

b. we cannot solve the problem because we are not given the area.

c. 16 kpa

d. 64 kpa

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

What are transitions between a liquid and a solid called? identify which way they are transitioning

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8