Quiz about Q4: Review 2022-2023

Question 1

Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue. The substance in the beaker ______

Accepted Answer

Is a base.

Answer

has a neutral pH.

Answer

is an acid.

Answer

doesn't have a pH.

Question 2

Which of the following word pairs correctly completes the sentence below? ______ are corrosive substances characterized as having a strong smell, a sour taste, and a ____.

Accepted Answer

Acids

pH less than 7

Answer

Bases

pH less than 7

Answer

Bases

pH greater than 7

Answer

Acids

pH greater than 7

Question 3

Stronger acids are those that ______

Accepted Answer

lose their protons easily.

Answer

hold onto their protons more strongly.

Answer

more completely inhibit polarity in water.

Answer

exhibit hydrogen bonding.

Question 4

When an equal strength acid and base are mixed, what kind of chemical reaction occurs?

Accepted Answer

Neutralization

Answer

Oxidation

Answer

Decomposition

Answer

Combustion

Question 5

Potassium hydroxide, also known as lye, dissociates into metal and hydroxide ions in water. The resulting solution is caustic and used for industrial purposes.

What describes the dissociation solution?

Accepted Answer

Strong Base

Answer

Weak Acid

Answer

Weak Base

Answer

Strong Acid

Question 6

The table shows the pH of several solutions. Which solution has the greatest concentration of H⁺ ions?

Accepted Answer

Vinegar

Answer

Bleach

Answer

Milk

Answer

Water

Question 7

The table shows the pH of several solutions. Which solution has the greatest concentration of OH^- ions?

Accepted Answer

Bleach

Answer

Water

Answer

Milk

Answer

Vinegar

Question 8

The base Ba(OH)₂ neutralizes the acid H₂SO₄. Which salt is produced?

Accepted Answer

BaSO4

Answer

BaH2

Answer

BaH2S

Answer

BaO4

Question 9

In the following reaction, which species is acting as the Arrhenius Acid?

H₃PO₄ + Ca(OH)₂ ---> H₂O + Ca₃(PO₄)₂

Accepted Answer

H3PO4

Answer

Ca(OH)2

Answer

H2O

Answer

Ca₃(PO₄)₂

Question 10

In the following reaction, which species is acting as the Arrhenius Base?

H₃PO₄ + Ca(OH)₂ ---> H₂O + Ca₃(PO₄)₂

Accepted Answer

Ca(OH)2

Answer

H3PO4

Answer

H2O

Answer

Ca₃(PO₄)₂

Question 11

Which of the following shows the behavior of an Arrhenius acid?

Accepted Answer

HBr --> H⁺ + Br^-

Answer

NaOH -->Na⁺+OH^-

Answer

NH₃ + H₂O -->NH₄ + OH^-

Answer

Ca(ClO₃)₄ -->Ca⁺²+ ClO₃^-

Question 12

A chemical has a pH=13. It would be best described as

Accepted Answer

Strong base

Answer

Strong acid

Answer

Weak acid

Answer

Weak base

Question 13

A chemical has a pH=6. It would be best described as

Accepted Answer

Weak acid

Answer

Strong acid

Answer

Strong base

Answer

Weak base

Question 14

A solution with a pH of 8.6 would be

Accepted Answer

Base

Answer

Acid

Answer

Neutral

Answer

Acid and Base

Question 15

The formula for calculating pH is?

Accepted Answer

pH= -log[H⁺]

Answer

pOH= - log [OH^-]

Answer

pOH= log[OH^-]

Answer

pH= log[H⁺]

Question 16

What is the formula for calculating the pOH?

Accepted Answer

pOH = - log[OH^-]

Answer

pH = - log[H⁺]

Answer

pOH = log[OH^-]

Answer

pH = log[H⁺]

Question 17

For a solution, pH + pOH =

Accepted Answer

14

Answer

7

Answer

1.0 x 10^-14

Answer

1.0 x 10^-7

Question 18

If the [H⁺] of a solution is 1 x 10^-3 M, the pH is

Accepted Answer

3

Answer

11

Answer

1

Answer

-3

Question 19

If the [OH^-] of a solution is 2.7 x 10^-4 M, the pOH of the solution is

Accepted Answer

3.57

Answer

10.44

Answer

-4.43

Answer

1.00

Question 20

Oranges have a [H₃O⁺] of 1.7 x 10^-2 M. Their pH is

Accepted Answer

1.77

Answer

10.91

Answer

12.23

Answer

3.09

Question 21

Oranges have a [H₃O⁺] of 1.7 x 10^-2 M. Their pOH is

Accepted Answer

12.23

Answer

1.77

Answer

10.91

Answer

3.09

Question 22

Which type of energy is absorbed when liquid water changes into water vapor?

Accepted Answer

Thermal

Answer

Light

Answer

Nuclear

Answer

Electrical

Question 23

As the average kinetic energy increases in a material the material has

Accepted Answer

increased temperature

Answer

decreased temperature

Answer

increased specific heat

Answer

decreased specific heat

Question 24

The average kinetic energy of particles in a sample of matter is measured as the

Accepted Answer

temperature

Answer

kinetic force

Answer

thermal rate

Answer

reaction rate

Question 25

When nitroglycerin (C₃H₅ON₃O₉) is detonated, the carbon and hydrogen atoms bonded to oxygen and nitrogen separate and heat is released. What type of energy is stored in the bonds?

Accepted Answer

Chemical potential energy

Answer

Thermal potential energy

Answer

Thermal kinetic energy

Answer

Isothermic potential energy

Question 26

When a candle is lit, hydrocarbons are combusting. An exothermic reaction is occuring. Energy is being

Accepted Answer

released

Answer

absorbed

Answer

destroyed

Answer

frozen

Question 27

Water exists as a ______ at 700 mmHg and 50^oC.

Accepted Answer

liquid

Answer

solid

Answer

gas

Answer

supercritical fluid

Question 28

A 15.75g piece of iron absorbs 1086.75 Joules of heat energy, and its temperature changes from 25^oC to 175^oC. Calculate the specific heat of iron.

Accepted Answer

0.46 J/g^oC

Answer

2,567,446.875 J/g^oC

Answer

1.654 J/g^oC

Question 29

What is the symbol for Specific Heat?

Accepted Answer

c

Answer

q

Answer

m

Answer

$$\Delta$$ t

Q4: Review 2022-2023

35 questions

Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue. The substance in the beaker ______

Which of the following word pairs correctly completes the sentence below? __ are corrosive substances characterized as having a strong smell, a sour taste, and a .

Stronger acids are those that ______

When an equal strength acid and base are mixed, what kind of chemical reaction occurs?

Drag the correct answer to the boxes to make the statement true.
The conjugate pair for a strong acid is a (a) (b)

Drag the correct answer to the boxes to make the statement true.
The conjugate pair for a weak acid is a (a) (b)

Potassium hydroxide, also known as lye, dissociates into metal and hydroxide ions in water. The resulting solution is caustic and used for industrial purposes.
What describes the dissociation solution?

The table shows the pH of several solutions. Which solution has the greatest concentration of H⁺ ions?

The table shows the pH of several solutions. Which solution has the greatest concentration of OH^- ions?

The base Ba(OH)₂ neutralizes the acid H₂SO₄. Which salt is produced?

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Q4: Review 2022-2023

35 questions

Holly has an unknown substance in a beaker. She wants to determine the relative pH of the unknown substance. She places a piece of blue litmus paper into the substance, and the litmus paper stays blue. The substance in the beaker ______

Which of the following word pairs correctly completes the sentence below? ______ are corrosive substances characterized as having a strong smell, a sour taste, and a ____.

Stronger acids are those that ______

When an equal strength acid and base are mixed, what kind of chemical reaction occurs?

Drag the correct answer to the boxes to make the statement true.The conjugate pair for a strong acid is a ​ ​ (a) ​ (b)

Drag the correct answer to the boxes to make the statement true.The conjugate pair for a weak acid is a ​ (a) ​ (b)

Potassium hydroxide, also known as lye, dissociates into metal and hydroxide ions in water. The resulting solution is caustic and used for industrial purposes.What describes the dissociation solution?

The table shows the pH of several solutions. Which solution has the greatest concentration of H+ ions?

The table shows the pH of several solutions. Which solution has the greatest concentration of OH- ions?

The base Ba(OH)2 neutralizes the acid H2SO4. Which salt is produced?

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Which of the following word pairs correctly completes the sentence below? __ are corrosive substances characterized as having a strong smell, a sour taste, and a .

Drag the correct answer to the boxes to make the statement true.
The conjugate pair for a strong acid is a (a) (b)

Drag the correct answer to the boxes to make the statement true.
The conjugate pair for a weak acid is a (a) (b)

Potassium hydroxide, also known as lye, dissociates into metal and hydroxide ions in water. The resulting solution is caustic and used for industrial purposes.
What describes the dissociation solution?

The table shows the pH of several solutions. Which solution has the greatest concentration of H⁺ ions?

The table shows the pH of several solutions. Which solution has the greatest concentration of OH^- ions?

The base Ba(OH)₂ neutralizes the acid H₂SO₄. Which salt is produced?