Flashcards

Question 1

What is a Periodic Table?

Answer 1

A tabular representation of all known elements in order based on atomic number

The periodic table organizes elements by their atomic structure and properties.

Question 2

What does Atomic Number refer to?

Answer 2

The number of protons in the nucleus of an atom. Also called the proton number

The atomic number determines the identity of an element.

Question 3

Define Periods in the context of the periodic table.

Answer 3

A horizontal row in the periodic table.

Question 4

What are Groups in the periodic table?

Answer 4

A vertical column in the periodic table containing elements with similar chemical properties.

Question 5

What is an Element?

Answer 5

A substance made of only one type of atom.

Question 6

What is a Compound?

Answer 6

A substance where two or more elements have chemically joined together.

Question 7

Define Mixture.

Answer 7

Two or more substances that are not joined together. The substances can be elements, compounds, or both.

Question 8

What does Reactivity mean?

Answer 8

The tendency of a substance to undergo a chemical reaction.

Question 9

What is the general property of Group 1 elements?

Answer 9

Group 1 metals are very soft metals which can be cut with a knife and are very reactive.

Question 10

What happens when Group 1 metals react with water?

Answer 10

They produce a metal hydroxide and hydrogen gas.

Question 11

What is an example of a reaction involving Lithium from Group 1?

Answer 11

Lithium + Water → Lithium Hydroxide + Hydrogen

Question 12

How do Group 2 metals react with acids?

Answer 12

They produce a salt and hydrogen. The name of the salt depends on the acid used.

Question 13

What is produced when Magnesium reacts with Hydrochloric Acid?

Answer 13

Magnesium Chloride + Hydrogen

Question 14

What is the trend of reactivity in Group 2 elements?

Answer 14

Group 2 metals become more reactive when you go down the group.

Question 15

What is the reactivity trend for Group 7 - The Halogens?

Answer 15

Group 7 elements become less reactive when you move down the group.

Question 16

What is special about Group 0 - The Noble Gases?

Answer 16

Group 0 elements are not reactive because the atoms have full outer shells.

Question 17

Give examples of Group 1 elements.

Answer 17

• Lithium - Li
• Sodium - Na
• Potassium - K

Question 18

List examples of Group 2 elements.

Answer 18

• Beryllium - Be
• Magnesium - Mg
• Calcium - Ca

Question 19

Name a few elements from Group 4.

Answer 19

• Carbon - C
• Silicon - Si
• Germanium - Ge

Question 20

What are examples of Group 6 elements?

Answer 20

• Oxygen - O
• Sulfur - S
• Selenium - Se

Question 21

Identify elements from Group 7.

Answer 21

• Fluorine - F
• Chlorine - Cl
• Bromine - Br

Question 22

What are some applications of Ceramics?

Answer 22

Used for pottery and brick.

Question 23

Describe the properties of Polymers.

Answer 23

Polymers have long molecules and unique properties suitable for various applications.

Question 24

Fill in the blank: Group 1 metals are very ______ metals.

Answer 24

[soft]

Question 25

True or False: Group 2 metals are more reactive than Group 1 metals.

Answer 25

False

Question 26

Fill in the blank: Group 0 elements are not reactive because they have full ______ shells.

Answer 26

[outer]

Question 27

What is the Periodic Table?

Answer 27

A table of all the known elements in order of their atomic number.

Question 28

What are Groups in the Periodic Table?

Answer 28

Vertical columns on the periodic table.

Question 29

What are Periods in the Periodic Table?

Answer 29

Horizontal rows on the periodic table.

Question 30

Define an Atom.

Answer 30

The smallest piece of an element.

Question 31

What is an Element?

Answer 31

A substance containing only one type of atom.

Question 32

What is a Compound?

Answer 32

Two or more different elements which are chemically joined together.

Question 33

What is a Mixture?

Answer 33

Two or more different elements or compounds which are not chemically joined together.

Question 34

What is a Chemical Reaction?

Answer 34

A process in which one or more substances are changed into others, by their atoms being rearranged.

Question 35

What is a Physical Reaction?

Answer 35

A process in which the physical properties are changed, but no new substances are made.

Question 36

What is a Reactant?

Answer 36

A substance that reacts together with another substance to form products during a chemical reaction.

Question 37

What is a Product?

Answer 37

A substance formed in a chemical reaction.

Question 38

State the Conservation of Mass.

Answer 38

The total mass of the products in a chemical reaction will be the same as the total mass of the reactants.

Question 39

Fill in the blank: The changes in a chemical reaction can be modeled using _______.

Answer 39

equations.

Question 40

How are reactants and products represented in a chemical equation?

Answer 40

Reactants are shown on the left of the arrow, and products are shown on the right.

Question 41

What happens in a balanced equation?

Answer 41

It gives the symbols and formulas of the substances involved.

Question 42

What is the naming convention for a compound made of a metal and a non-metal?

Answer 42

The metal always goes first, and the ending of the non-metal changes to 'ide'.

Question 43

What is the naming convention for compounds that contain three or more elements including a metal, non-metal, and oxygen?

Answer 43

The metal goes first, and the ending of the non-metal changes to 'ate'.

Question 44

Give an example of a compound formed from a metal and a non-metal.

Answer 44

Copper + Oxygen → Copper Oxide.

Question 45

Fill in the blank: In a physical change, a substance simply changes _______.

Answer 45

physical state.

Question 46

What does it mean to balance a chemical equation?

Answer 46

To adjust the number of units of some substances until you have equal numbers of atoms on both sides of the arrow.