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Density Lab Science Olympiad 2018-19

Total questions: 18

Worksheet time: 6mins

Name
Class
Date
1.

What is the formula for density?

a)

ρ = m ÷ v

b)

ρ = m × v

c)

ρ = v ÷ m

d)

ρ = m - v

2.

What is Boyle's Law?

a)

PV = K

b)

PV = nRT

c)

P2P1 = P1P2

d)

P1/T1 = P2/T2

3.

What is Charles' Law?

a)

P1V1 = P2V2

b)

V1/T1 = V2/T2

c)

PV = K

d)

P1V1/T1 = P2V2/T2

4.

What is Gay-Lussac's Law?

a)

P1/T1 = P2/T2

b)

P1V1 = P2V2

c)

V1/T1 = V2/T2

d)

PV = nRT

5.

What is the Ideal Gas Law?

a)

PV = nRT

b)

P1V1/T1 = P2V2/T2

c)

n = m/MW

d)

P1V1 = P2V2

6.

What are the units for volume?

a)

kg, g

b)

lbs, newtons

c)

mL, L

d)

None of the above

7.

Name the 5 gas laws.

a)

Boyle's Law, Charles' Law, Archimedes' Principle, Ideal Gas Law, Gay-Lussac's Law

b)

Boyle's Law, Charles' Law, Gay-Lussac's Law, Combined Gas Law, Ideal Gas Law

c)

Avogardo's Law, Boyle's Law, Charles' Law, Gay-Lussac's Law, Combined Gas Law

d)

Gas Law 1, Gas Law 2, Gas Law 3, Gas Law 4, Gas Law 5

8.

What is the constant in Charles' Law?

a)

pressure

b)

temperature

c)

molecular weight

d)

volume

9.

According to Archimedes' Principle, if a body is immersed in a fluid, then what is the buoyant force acted upon it equivalent to?

a)

the weight of the fluid that the body displaces

b)

the weight of the body

c)

the volume of the fluid that the body displaces

d)

the mass of the body

10.

What is number density?

a)

The number of countable objects per unit volume.

b)

The amount of a substance per unit volume or area.

c)

The amount of mass per unit surface area.

d)

The mass of a substance per unit volume.

11.

What is the unit for temperature for the gas laws?

a)

Kelvin (K)

b)

Celsius (C°)

c)

Fahrenheit (F°)

d)

None of the above

12.

What is STP?

a)

Standard Temperature and Pressure - 273 K and 101.3 kPa

b)

Standard Temperature and Pressure - 1,000 mL and 101.3 kPa

c)

mm Hg

d)

Standard Pressure - 101.3 kPa

13.

How do you convert Celsius into Kelvin?

a)

+273°

b)

-273°

c)

+45°

d)

+254°

14.

What is the molality of 80 g of NaCl dissolved in 650 mL of water?

a)

1.82 M

b)

1.5 m

c)

1.82 m

d)

1.72 m

15.

What is the PPM of 130 g of NaCl dissolved in 1300 mL of water?

a)

1430.05 PPM

b)

13425 PPM

c)

90909.01 PPM

d)

90909.01 PPB

16.

What is the formula for molality?

a)

Molality = Mass of Solute/L of solution

b)

Molality = Mass of Solute/kg of Solvent

c)

Molality = Mass of Solute/Mass of Solution

d)

Molality = Moles of Solute/Moles of Solution

17.

What is the volume of one mole at STP?

a)

2.24 L

b)

44.8 L

c)

96.6 L

d)

22.4 L

18.

If an cylinder with a radius of 5 cm and a height of 9 cm is completely submerged in a tank full of water, what is the amount of the fluid displaced? If it is 67 kg, what is the weight of the cylinder? What is the normal force at which it presses against the bottom of the tank?

a)

25x7\int_2^5x^7

b)

thift7werr67q