Atoms & Molecules

Question 1

What determines the strength of an acid?

Accepted Answer

Number of hydrogen ions formed

Question 2

What is a substance that changes color when exposed to an acid or base solution?

Accepted Answer

Indicator

Question 3

Which is not an acid?

Accepted Answer

Bleach

Question 4

What are substances containing only one kind of atom?

Accepted Answer

Elements

Question 5

What two substances form covalent bonds?

Accepted Answer

Two nonmetals

Question 6

Which range would be considered acids on the pH scale?

Accepted Answer

2-5

Question 7

What do groups have in common on the periodic table?

Accepted Answer

Exist in vertical columns, Similar chemical and physical properties

Question 8

What is the bond when positive and negative ions attract each other?

Accepted Answer

Ionic

Question 9

Which is not an indicator?

Accepted Answer

Rock salt

Question 10

What is the smallest piece of an element?

Accepted Answer

Atom

Question 11

How do you find the atomic mass of an element?

Accepted Answer

By adding the number of protons and neutrons

Question 12

What is an atom that has lost or gained an electron and is now charged?

Accepted Answer

Ion

Question 13

What charge do electrons have?

Accepted Answer

Negative

Question 14

What two substances form metallic bonds?

Accepted Answer

Two metals

Question 15

What charge do neutrons have?

Accepted Answer

Neutral

Question 16

Why are chemical symbols used?

Accepted Answer

To make writing names quicker and easier

Question 17

What charge do protons have?

Accepted Answer

Positive

Question 18

What are compounds that form hydrogen ions when dissolved in water?

Accepted Answer

Acids

Question 19

What are atoms joined with other atoms to form units?

Accepted Answer

Molecules

Question 20

Which subatomic particle is responsible for forming bonds?

Accepted Answer

Electrons

Question 21

Which is not a base?

Accepted Answer

Vinegar

Question 22

What are compounds that form hydroxide ions when dissolved in water?

Accepted Answer

Bases

Question 23

What is the bond when atoms share electrons?

Accepted Answer

Covalent

Question 24

What is found by adding together the number of protons and neutrons?

Accepted Answer

Atomic Mass

Question 25

Which element did the Ancient Greeks not believe existed?

Accepted Answer

Ice

Question 26

What tells us the number of protons in an atom?

Accepted Answer

Atomic Number

Question 27

What determines the strength of a base?

Accepted Answer

The number of hydroxide ions formed

Question 28

Which likely results in an ionic bond?

Accepted Answer

A metal bonded to a nonmetal

Question 29

What is the charge of a normal atom?

Accepted Answer

No overall charge

Question 30

When is an atom stable?

Accepted Answer

When it has a full outer shell of electrons

Question 31

Which is not a main part of an atom?

Accepted Answer

Ion

Question 32

Which number pH indicates an acid?

Accepted Answer

2

Question 33

How many electrons can the first electron shell hold?

Accepted Answer

2

Question 34

What two substances form ionic bonds?

Accepted Answer

A metal and a nonmetal

Question 35

How many electrons are in a normal atom?

Accepted Answer

The same as the number of protons

Question 36

Which subatomic particle has a negative charge?

Accepted Answer

Electrons

Question 37

Which elements are unknown to God?

Accepted Answer

None

Question 38

Which number pH indicates a base?

Accepted Answer

10

Question 39

What is the study of matter?

Accepted Answer

Chemistry

Atoms & Molecules

Questions 39

Atoms & Molecules

Questions 39