quizizz review 2 (chem)
Calculate 923 g ÷ 20312 cm3 and give your answer with the appropriate number of significant figures.
0.0454 g/cm3
An object with which of the following densities will float on water?
0.7 g/cm3
Count the number of significant digits in the number 0.000005 kg
1
How many significant figures: 1000 mL
1
Calculate 1.23 m x 0.89 m and give your answer with the appropriate number of significant figures.
1.1 m2
Change from standard form to scientific notation: 12,000,000
1.2 x 107
1 meter = _______ cm
100
calculate the following to the correct number of sig figs. 32.451 - 21.5
11.0
Convert 450 K to Celsius
177oC
How many significant figures: 0.012 km
2
Divide: 5.2 x 1011 ÷ 2 x 105
2.6 x 106
Multiply: (1.4 x 105)(2 x 107)
2.8 x 1012
What is the volume of Object X?
25.0 cm3
You know 1000 mg = 1 g. Convert 2.5 grams into milligrams.
2500 mg
This is ANT, Her body temperature was 35° C inside earth, After some enjoyment in the Thar Desert, She feels very Hot and her body temperature raises to 45 °C What is net temperature raises in Kelvin scale. ¯\_(ツ)_/¯
278.15 k (make sure theres a space between the number and k)
Multiply and round to 3 significant digits. 23 X 12.4
285
Change from standard form to scientific notation: 0.000398
3.98 x 10-4
Calculate 123000 m x 3234 m and give your answer with the appropriate number of significant figures.
3.98 x 108 m2
28 °C = __?__ K
301
Convert 100^oC to Kelvin
373 k
Count the number of significant digits in the number 2.123 X 1012
4
How many significant figures: 153.0 mL
4
The density of this material is 2 g/cm3.There are 24 cm3 Find the total mass.
48 grams
Count the number of significant digits in the number 923.12
5
You know that 12 inches = 1 foot. Convert 60 inches to feet.
5 feet
How would you write 0.0005 in scientific notation?
5 x 104
Convert 3.5 gallons into cups. (1gal = 16cups)
56 cups
How many significant figures: 100.000 cL
6
648 g = ____ mg
648,000
Try to change the number back to standard form: 6.79 x 104
67,900
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
7 g/cm3
How many kilograms of calcium are there in 173 pounds of calcium? (1 pound = 454 grams; 1 kg = 1000 g)
78.5 kg
Divide and round to 2 significant digits 988÷ 10.3
96
Round 98.245 to the nearest whole number.
98
7.82 x 10-6 is an example of scientific notation. The exponent of -6 tells you your number will be very ________.
Basic
What is the formula for density?
Density = mass/volume
What is the correct SI unit for mass?
Kilograms
If the exponent on your power of 10 is positive, is your number larger or smaller than 10?
Larger
Identify the equation for converting Fahrenheit to Celsius
Tc = (Tf - 32) x (5/9)
Which two units of volume are the same? (select all that apply)
cm3 and mL
The equation for solving Density is _____________
d=M/V
Helium balloons rise on earth because
helium is less dense than air
A student records the measurement to the tenths place using the following measuring device. Would this be a correct or incorrect measurement in regards to precision and sig figs?
incorrect, should report to hundredths place
The SI unit for temperature is __?__.
kelvin (K)
What SI unit is used to measure length?
meters
Which units of measurement are used for volume?
milliliter
Which liquid is the least dense?
oil
