1) ___________ are chemical substances that are slippery to touch.

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2) ____________ are chemical substances that are sour in taste and corrosive.

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3) A beaker full of acid is added to a beaker full of base. The pH of the base will:

A) change constantly

B) decrease

C) increase

D) stays the same

Correct!

4) An unknown substance is added to a solution and the pH increases. The substance is a:

A) acid

B) base

C) solvent

D) sweet

Correct!

5) A solution with a pH of ___ is considered to be neutral.

A) 0

B) 1

C) 7

D) 14

Correct!

6) Look at the picture below and list two acids.

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7) Look at the picture below and list two bases.

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8) _____ have a pH between 0 and 6.

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9) _______ have a pH scale between 8 and 14.

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10) Looking at the picture below, which example is neutral and has a pH scale of 7.

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11) Identify all the examples of a base according to the table below.

A) Hydrochloric Acid
B) Sodium Hydroxide
C) Water
D) Ammonia
E) Yogurt

Incorrect

12) Acid Property: Acids destroy the chemical properties of bases.

Base Property: Bases destroy the chemical properties of acids.

______________ is the name for this type of reaction.

A) Electrolyte

B) Substances

C) Alkalinity

D) Neutralization

Correct!

13) Salts are ____________ compounds formed during the reactions between acids and bases.

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14) The titration of acids with bases will yield soluble salts.

True

False

Correct!

15) Identify all the characteristics of an acid.

A) pH is less than seven
B) sour taste
C) slippery feel
D) turns litmus indicator from blue to red
E) turns litmus indicator from red to blue

Correct!

16) There are a variety of acids and bases. Scientists would call anything near pH 1 a...

A) Weak base

B) Strong base

C) Weak acid

D) Strong acid

Correct!

17) There are a variety of acids and bases. Scientists would call anything near pH 14 a ...

A) Weak base

B) Strong base

C) Weak acid

D) Strong acid

Correct!

18) The pH is a measure of oxygen ions (O+).

True

False

Correct!

19) The Kinetic Molecular Theory describes the behavior of ______________ in a gas.

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20) Particles in a gas are small and the motion of those particles is rapid, constant, and random.

True

False

Correct!

21) Gases can be defined by the following statement:

A) Gases are freely flow to fill the container they are in

B) Gases do not have a defined volume or shape

C) Gases are highly compressible

D) All of the above

Correct!

22) Gas molecules move in straight lines at different speeds.

True

False

Correct!

23) The average kinetic energy is directly related to the absolute temperature.

True

False

Correct!

24) ____________ law states that at a fixed temperature the volume of a gas is inversely proportional to the pressure exerted by the gas.

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25) __________ Law states that at constant pressure, the volume of a confined gas is directly proportional to the absolute temperature.

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26) ________________ Law states that at constant mass and pressure, the volume of a gas increases or decreases with the increase or decrease in temperature.

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27) As the temperature of a system increases, the pressure of the gases…

A) increases

B) decreases

C) stays the same

Incorrect

28) As the volume of a specific quantity of gas decreases, its pressure...

A) increases

B) decreases

C) stays the same

Correct!

29) Suppose you have two identical birthday balloons, with one filled with the gas helium and the other blown up by you. Assuming they’re both filled to the same amount, these balloons will have the same number of molecules.

True

False

Correct!

30) The Ideal Gas Law is a combination of Charles' Law and Boyle's Law.

True

False

Correct!

31) The Ideal Gas Law: Mathematically relates the number of ______ of a gas to its temperature, pressure and volume.

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32) Type the equation of the Ideal Gas Law.

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33) A 4.0-liter container has two gases inside, neon and argon. It is known that at 18 °C, the total pressure of the combined gases is 0.850 atm. If it is known that there are 0.100 moles of neon in the container, how many moles of argon is in the container?

Calculator

A) 0.042 moles argon

B) 0.142 moles argon

C) 4.98 moles argon

D) 6.93 moles argon

Incorrect

34) How many moles of oxygen must be placed in a 3.00-liter container in order to exert a pressure of 2.00 atmospheres at 25 °C?

Calculator

A) 0.245 moles

B) 4.08 moles

C) 146.8 moles

D) 21778 moles

Correct!

35) In a chemical reaction, substances known as ______________ will undergo changes to yield new substances, known as products.

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36) The rate of reaction will increase with an increase in temperature.

True

False

Correct!

37) The rate of reaction will increase with a decrease in concentration.

True

False

Correct!

38) Catalysts increase the rate of a chemical reaction by what means?

A) Increasing the concentration of reactants

B) Increasing temperature

C) Increasing collision energy

D) Lowering activation energy

Incorrect

39) In chemical reactions, electricity, a spark, and sunlight are all ways in which _______________ may be provided.

A) reactants

B) products

C) activation energy

D) catalysts

Incorrect

40) Which of the following will slow down the rate of a chemical reaction?

A) Increasing the surface area of the reactants

B) Increasing the concentration of reactants

C) Addition of a catalyst

D) Decreasing the temperature

E) Increasing the pressure

Incorrect

41)

For an effective collision to take place, there must be:

(choose two answers)

A) A sufficiently hard collision
B) A catalyst present
C) A correctly oriented collision
D) High pressure
E) No products present

Incorrect

42) Type the equation for equilibrium constant.

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43) Another term for a chemical change is a chemical _______.

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44) An __________________ reaction is one in which only the forward reaction occurs and is represented by a single-sided arrow within the equation.

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45) When the forward and reverse reactions occur at the same rate, the reaction is in chemical ___________

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46) Which of these choices can change the equilibrium constant?

A) forward

B) reverse

C) pressure

D) temperature

Incorrect

47) What letter represents the equilibrium constant?

A) K

B) M

C) R

Correct!

48) The equilibrium constant references the position of the equilibrium. If you have a large equilibrium constant, your reaction would favor…

A) reactants

B) products

Correct!

49)

Write a brief summary of your experience in this course in order to provide feedback that helps us to improve the course for future students.

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50)

Offline Activity

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List all the dates and times that you prepared and studied for this quarterly exam
In the description, write a brief summary on how you studied and prepared for this quarterly exam

DATE	START TIME	END TIME	DESCRIPTION
05/30/2023	01:22 PM	01:40 PM	unit 36

0 Hour(s) & 18 Minute(s)

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Defining Acids and Bases

Click on the link above to get an overview of Acids and Bases.

The pH Scale

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Acid-Base Chemistry

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Kinetic Molecular Theory

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Empirical Gas Laws

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Ideal Gas Law

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Kinetics

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Equilibrium

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Offline Activity

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