quizizz review 2 (chem)

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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


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