wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Praxis Review

Total questions: 23

Worksheet time: 16mins

Name
Class
Date
1.

Which theorist used a cathode ray to determine that atoms have negatively charged particles?

a)

Thompson

b)

Dalton

c)

Bohr

d)

Democritus

2.

Rutherford used what item to discover that the nucleus of an atom is where most of the mass is and it contains positively charged particles?

a)

Aluminum Foil

b)

Gold Foil

c)

Copper Wire

d)

Sheet of Silver

3.

Which theorist determined that electrons have different energy and orbit the nucleus of an atom?

a)

Democritus

b)

Aristotle

c)

Thompson

d)

Bohr

4.

Who was the Greek philosopher who first suggested that matter was composed of indivisible particles which he referred to as atomos?

a)

Dalton

b)

Democritus

c)

Einstein

d)

Plato

5.

The first universally accepted theory on atoms was proposed in 1803 by what English school teacher?

a)

Winston Churchill

b)

John Dalton

c)

James Bond

d)

J J Thomson

6.

Which of the following would most likely lead to a spontaneous reaction.

a)

A high negative enthalpy.

b)

A low negative enthalpy.

c)

A high positive enthalpy.

d)

A low positive enthalpy.

7.

For the process at 250C : I2(g) →I2(s). What are the signs for ΔG, ΔH and ΔS?

a)

ΔG + ΔH - ΔS -

b)

ΔG - ΔH - ΔS -

c)

ΔG - ΔH + ΔS +

d)

ΔG - ΔH + ΔS +

8.

1. Given the following information, calculate ΔG0 for the reaction below at 250C: (K = 0C + 273)

SnCl4(l) + 2 H20(l) → SnO2(S) + 4HCl(g),

ΔH0=+133.0 kJ and ΔS0 =+401.5 J/K

a)

-252.6 kJ

b)

-13.4 kJ

c)

13.4 kJ

d)

252.6 kJ

9.

Energy can never be created nor destroyed. Which law does this refer to?

a)

0th law of thermodynamics

b)

1st law of thermodynamics

c)

2nd law of thermodynamics

d)

3rd law of thermodynamics

10.

As temperature decreases, entropy decreases. At absolute zero, entropy is zero. Which law does this refer to?

a)

0th law of thermodynamics

b)

1st law of thermodynamics

c)

2nd law of thermodynamics

d)

3rd law of thermodynamics

11.

The entropy of the universe is always increasing. Which law does this refer to?

a)

0th law of thermodynamics

b)

1st law of thermodynamics

c)

2nd law of thermodynamics

d)

3rd law of thermodynamics

12.

From lowest entropy to highest entropy, the states of matter go in this order:

a)

solid -> liquid -> gas -> plasma

b)

plasma -> gas -> liquid -> solid

c)

gas -> plasma -> liquid -> solid

d)

solid -> liquid -> plasma -> gas

e)

It depends on the temperature of the object

13.

True or False: Entropy increases as temperature increases

a)

True

b)

False

14.

If A has the same temperature as B and C. B and C are in thermal equilibrium. Which law does this refer to?

a)

0th law of thermodynamics

b)

1st law of thermodynamics

c)

2nd law of thermodynamics

d)

3rd law of thermodynamics

15.

The force of attraction between molecules is ___.

a)

intermolecular forces

b)

bridge forces

c)

chemical bonds

16.

pressure exerted by a gas is due to numerous collisions of molecules with one another and with the container is supported by which theory?

a)

Law of Conservation of Matter

b)

Kinetic Molecular Theory

c)

2nd Law of Thermodynamics

d)

Electron Theory

17.

________ energy is stored in chemical bonds, and is shown through intermolecular forces

a)

electrical

b)

electromagnetic

c)

nuclear

d)

chemical

18.

________ energy displays the movement of electrons through a material

a)

electrical

b)

nuclear

c)

chemical

d)

mechanical

19.

this type of energy is stored within an atom's nucleus

a)

electrical

b)

chemical

c)

nuclear

d)

thermal

20.

the total kinetic energy due to randomness is ...

a)

thermal energy

b)

electrical energy

c)

nuclear energy

d)

electromagnetic energy

21.

which is spontaneous in the forward reaction?

a)

G < 0

b)

G > 0

c)

G = 0

22.

which is spontaneous in the forward reaction?

a)

H > 0

b)

H < 0

c)

H = 0

23.

which is spontaneous in the forward reaction?

a)

S < 0

b)

S > 0

c)

S = 0