Chemistry

Challenge #1The Numbers Game

Rule

s All members must participate. Team will be disqualified if members fail to get involved.

Do not use the white board for NONSENSE. (DQ)

Roun

d #1 Collaborate to answer

the following questions.Using 1 white board, write your teams answer to the following questions.

Round off the following numbers to three significant digits:

4.53619

Round off the following numbers to three significant digits:

5.457

Round off the following numbers to three significant digits:

43.659

Round off the following numbers to three significant digits:

876493

Round off the following numbers to three significant digits:

0.0008769

Roun

d #2

Collaborate in your team Using 1 white board,

write your teams answer to the following questions.

WATCH YOUR SIG DIGS AND UNITS.

Perform the following operations giving the proper number of significant figures in the answer. Watch your units.

 

23.4 cm × 1423.4 cm × 14 cm

Perform the following operations giving the proper number of significant figures in the answer. Watch your units.

 

0.005 in - 0.0007 in

Perform the following operations giving the proper number of significant figures in the answer. Watch your units.

 

0.0945 m x 1.4700 m

Perform the following operations giving the proper number of significant figures in the answer. Watch your units.

 

0.2 grams ÷ 0.0005 mL

Perform the following operations giving the proper number of significant figures in the answer. Watch your units.

 

7.895 ft + 34 in

Roun

d #3

For this round you will be using as many white boards as needed and the

tape grid on the ground. Collaborate Teams will write out portions of the dimensional

analysis process on their white boards. Members will arrange

themselves into grid.

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

The average distance from the thumb to the little finger is 6 inches. Convert this to centimeters.

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

A condor has a wing span of 3.05 m. What is the wing span in feet?

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

According to the Guinness Book of Records the heaviest baby ever born weighed 29 lbs 4 oz (29.25 lbs). What was the baby’s mass in kg?

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

Cross country skis are 210 cm long. What is their length in inches?

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

In Europe gasoline is sold by the liter. Assume that it takes 11.2 gallons of gasoline to fill the tank of a compact car. How many liters of gasoline will it take?

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

A 1.6 oz. of package of cinnamon and spice instant oatmeal contains 34 g of carbohydrates. If you had instant oatmeal 6 days a week, how many ounces of carbohydrate would you consume in a week?

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

What is the density of an object that has a mass of 85.0 g and a volume of 23.7mL?

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

1.100 g/mL to lbs/gal

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

If the RDA for vitamin C is 60 mg per day and there are 70 mg of vitamin C per 100 g of orange, how many 3 oz. oranges would you have to eat each week to meet this requirement?

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

What will be the mass of 50 mL of a substance with a density of 0.73 g/ mL?

Perform the following conversions giving the proper number of significant figures in the answer. Watch your units.

What is the density of a cube with dimensions of 1.5 cm x 7.500 cm x 3.0 cm and a mass of 17.0 g and is?

TEST

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