Deck 12: Basic Chemistry

Question 1

What branch of chemistry that studies the relationships among the physical properties of substances and their chemical compositions and transformations?

A) Organic chemistry
B) Inorganic chemistry
C) Physical chemistry
D) Compound chemistry

Answer 1

C
Explanation: A) Incorrect. Organic chemistry is the study of carbon-containing compounds.
B) Incorrect. Inorganic chemistry is the study of substances that do not contain carbon.
C) Correct. Physical chemistry is the branch of chemistry that studies the relationships among the physical properties of substances and their chemical compositions and transformations.
D) Incorrect. Physical chemistry is the branch of chemistry that studies the relationships among the physical properties of substances and their chemical compositions and transformations.

Question 2

What term is used to describe positively charged particles found in the nucleus of an atom?

A) Protons
B) Electrons
C) Neutrons
D) Molecules

Answer 2

A
Explanation: A) Correct. Protons are positively charged particles found in the nucleus of an atom.
B) Incorrect. Electrons are negatively charged particles that orbit the nucleus of an atom.
C) Incorrect. Neutrons are particles without electrical charge, found in the nucleus of an atom.
D) Incorrect. Molecules are a set of two or more atoms held together by chemical bonds.

Question 3

Which of the following is an example of an inert gas?

A) Neon
B) Oxygen
C) Hydrogen
D) Phosphorous

Answer 3

A
Explanation: A) Correct. Noble gases, also called inert gases, include helium, neon, argon, krypton, xenon, and radon.
B) Incorrect. Noble gases, also called inert gases, include helium, neon, argon, krypton, xenon, and radon.
C) Incorrect. Noble gases, also called inert gases, include helium, neon, argon, krypton, xenon, and radon.
D) Incorrect. Noble gases, also called inert gases, include helium, neon, argon, krypton, xenon, and radon.

Question 4

What is the atomic number in the periodic table?

A) A shorthand way to refer to the element when writing chemical equations
B) The number of protons found in the nucleus of an atom
C) The approximate sum of the number of protons and neutrons found in the nucleus of an atom
D) A measure of the amount of hydrogen ions in a solution that can react and indicate whether a substance is an acid or a base

Question 5

What do acids release when mixed with water?

A) Oxygen
B) Hydroxyl
C) Hydrogen
D) pH

Question 6

What are the starting substances in a chemical reaction?

A) Products
B) Reactants
C) Catalyst
D) Solution

Question 7

What is the result when substances are combined but do not react chemically?

A) Soluble
B) Mixture
C) Insoluble
D) Solution

Question 8

What composes matter?

A) Atoms
B) Carbon
C) Elements
D) Hydrocarbons

Question 9

What color does a base turn litmus paper?

A) Red
B) Blue
C) Green
D) Yellow

Question 10

When reading the periodic table, what happens to electronegativity from left to right?

A) Electronegativity increases
B) Electronegativity decreases
C) Electronegativity does not change
D) Electronegativity is not measured

Question 11

If a new substance is not produced, what type of change has occurred?

A) Physical change
B) Chemical change
C) Compounded change
D) Composition change

Question 12

Which pH value is an indicator of a strong acid?

A) 0
B) 7
C) 14
D) 100

Question 13

What happens when a catalyst is added to a chemical reaction?

A) A new substance is formed
B) A physical reaction occurs
C) Speed of the reaction is decreased
D) Speed of the reaction is increased

Question 14

What part of a solution is the substance present in a solution in the largest amount?

A) Soluble
B) Solvent
C) Insoluble
D) Solute

Question 15

Which of the following is an example of a physical change?

A) Smell
B) Gas bubbles
C) Release of heat
D) Creation of new substance

Question 16

Which of the following is an example of a chemical property?

A) pH
B) Color
C) Boiling point
D) Viscosity

Question 17

What is it called if a solute will dissolve in a solvent?

A) Soluble
B) Insoluble
C) Miscible
D) Immiscible

Question 18

What term refers to the release of energy during a chemical reaction?

A) Exothermic
B) Endothermic
C) Heterogeneous
D) Immiscible