Matter/ Not Matter
Two characteristics of all matter
What is mass and volume?
Convert 17km to meters. Use the proper technique to calculate.
17,000 meters
How many significant figures are in the number 4,230?
3 significant figures
Convert the following number from standard form to scientific notation:
6,000,000,000
6 x 109
A student uses a scale to measure the mass of a sample of NaCl, they record it as 18.3 grams. The actual mass of the salt is 20.0 grams. What is the percent error of the students measurement?
8.5%
Which of the following is NOT a chemical property of matter?
burning
corroding
melting
fermenting
What is melting?
Convert 12 years to minutes. Use the proper technique to calculate and significant digits.
6,307,200 minutes
significant figures = 6,300,000 minutes
How many significant figures are in the number 0.000000020490?
5 significant figures
Convert the following number from standard form to scientific notation:
0.000256
2.5 x 10-4
The mass of an unknown sample was found to be 15.6 grams and the volume 32.2 milliliters. What is the density of the unknown sample?
0.484 g/mL
Which characterizes heat?
a) It exists if there is a difference in temperature.
b) It moves from warmer to cooler objects.
c) It can yield a change in phase of matter.
d) all of the above
What is d- all of the above?
Convert 15.9 mm to km. Be sure to set the problem up with the correct technique. Provide answer in scientific notation.
1.59 x 10-5 km
Answer the following with the proper number of significant figures:
(14.57m) / (0.50s) = ?
29 m/s - multiplication and division - the lowest number of significant figures determines the number of significant figures.
Convert the following number from scientific notation to standard form:
6.08 x 10-5
0.0000608
The volume of a sheet of aluminum foil is calculated to be 15 mL. The accepted density of aluminum is 2.7 g/mL. What is the mass of the sample of aluminum foil?
40.5 grams
All of the following are examples of intensive properties except:
density
mass
boiling point
melting point
What is mass?
The volume of a balloon is 4.0 ft3. What is the volume of the same balloon in m3?
1 ft = 0.3048 m
0.11 m3
Solve the following equation with the proper number of significant figures:
91.456 L + 121.1 L = ?
212.6 L - addition and subtraction - the lowest place value determines the number of significant figures.
Solve the following equation, answer with the correct number of significant figures:
(6.02 x 1023 m) / (1.23 x 1010 m) = ?
4.89 x 1013
A classroom conducted an experiment and found that the density of a small lump of iron was 8.011 g/mL. The accepted density of iron is 7.874 g/mL. What is the percent error of the experiment conducted?
1.74%
The compound Na2CO3 is composed of the elements...
What are sodium, carbon, and oxygen?
The fuel efficiency of a Hyundai Accent is 36 miles per gallon, calculate this in kilometers per liter.
1609.34 meters = 1 miles
1 gallons = 3.79 liter
= 15.286
correct significant figures = 15 km / L
Calculate the following with the appropriate number of significant figures:
(14.50 g + 22.156 g ) / 5.15 cm3 = ?
7.12 g/cm3
Calculate the following:
(6.02 x 1023 m + 5.4 x 10-3 m) / (1.25 x 1015 s) = ?
481,600,000 m/s
significant figures = 480,000,000 m/s
The density of carbon dioxide in air is 0.65 mg/L, what volume is occupied by 12g of carbon dioxide?
= 18461.54 L
significant figures = 18,000 L