# Warm-ups 2nd marking period

Warm-up 3rd marking period #1 2/04/08 2Ca(s) + 2H 2 O(l) → 2CaOH(s) + H 2 (g) What is the state of matter of Ca? H 2 ? Name the products. Name the reactants. _______________________________________ #2 2/12/08 List the three states of matter and describe the closeness and interaction of the molecules in each. #3 2/19/08 Why does an increase in temperature of a material in a gaseous state result in an increase in pressure?

#4 2/20/08 Write the definition of an amorphous material, a liquid crystal and plasma. #5 2/21/08 If you blow up a balloon with hot air and then put it in the freezer, what will happen to the balloon? _______________________________________ #6 2/26/08 Convert the following temperatures a.

b.

100 o C to K 478 o C to K b. 228K to d. 2K to o C o C _____________________________________________

#7 2/29/08 What is the difference between Brownian motion and diffusion? #8 3/05/08 It takes 4000joules of heat to vaporize water at 100 o C. The heat of vaporization is 2260J/g. How much water is vaporized?

#9 3/11/08 Convert the following: 1.) 1325 pennies to quarters 2.) 4.8 ft to cm 3.) 8 lb to g #10 3/12/08 1 mile = 1.6 km Convert the following: 1 atm = 760 mmHg 1.) 27 hm to dm 2.) 105 km to miles 3.) 3 atm to mmHg

#11 3/24/08 1 gallon = 3.8 L 1 mile = 1.6 km Convert the following: 1.) 250 cm to hm 2.) 4.5 gallons/hr to liters/min. 3.) 105 km/hr to miles/hr #12 3/25/08 1 in. = 2.54cm 1 mile = 1.6 km Convert the following: 1.) 22 in. to mm 2.) 10 m to cm 3.) 72 miles/hr to km/min.

#13 3/26/08 Convert the following: 1.) 43.8 lb/in 2 to atm 2.) 845 mm Hg to kPa 3.) 680 in. Hg to mm Hg #14 3/31/08 Warm-ups due 4/4/08. You need 15 warm-ups. Fill in what you know for the problem below.

The pressure of a piston is 3 atm and the volume is 1.2 liters. If temperature remains constant and the pressure is reduced to 2 atm, what is the new volume? P 1 = V 1 = P 2 = V 2 = #15 4/01/08 The volume of a capped syringe is 5ml. The pressure is 101.3kPa. The pressure is increased to 132 kPa. What is the new volume? _______________________________________ #16 4/02/08

The volume of a balloon is 50ml and has a temperature of 30 o C. If the temperature is reduced to 10 o C, what is the new volume?