Chemistry

Question 1

The rows in the periodic table are called?

Answer 1

A Period

Question 2

a group of elements with similar properties is called?

Answer 2

A Family

Question 3

Name all the families of the Periodic Table

Answer 3

Alkali Metals, Alkaline Earth Metals, Halogens, Noble Gases

Question 4

Where are Metals and Non Metals found on the Periodic Table?

Answer 4

Metals are found on the left side of the staircase while Nonmetals are found on the right side of the staircase

Question 5

What are atoms?

Answer 5

atoms are the building blocks of life

Question 6

What do atoms consist of?

Answer 6

Atoms consist of protons, neutrons, electrons

Question 7

What is an ion?

Answer 7

An ion is a particle that has a positive or negative charge

Question 8

What is the valence charge?

Answer 8

valence charge is tha ammount of atoms an ion loses or gains to become stable

Question 9

What does the Ion symbol represent?

Answer 9

the amount of atoms an ion has lost or gain

Question 10

What are Cations?

Answer 10

Cations are positively charged metal ions that has lost electrons

Question 11

What are Anions?

Answer 11

Anions are negatively charged non-metal ions that have gained electrons

Question 12

what are electron dot diagrams

Answer 12

electron dot diagrams are diagrams that show the number of valennce electrons and concentrate on the outermost shell of the atom.

Question 13

What are compounds composed of?

Answer 13

compounds are composed two or more types of atoms chemically bonded together in a fixed proportion

Question 14

What are ionic compounds composed of?

Answer 14

Ionic compounds are composed of a metal and non metal, OR a metal and polyatomic ion

Question 15

What are covalent compundes made of?

Answer 15

Covalent compounds are made up of two nonmetals

Question 16

What is a chemical reaction?

Answer 16

a chemical reaction is a change in matter that produces new substances with new properties.

Question 17

Give signs of a chemical change

Answer 17

New odor, light or heat is produced, bubbles formed, and unexpected color change.

Question 18

State the Law of Conservation of Mass

Answer 18

the total mass of the products is equal to the total mass of reactants.

Question 19

What is HOFBrINCL?

Answer 19

elements that are not strong enough to stand alone, becoming diatomic ions. (add 2)

Question 20

What is a Synthesis Reaction

Answer 20

two or more reactants combine to produce one new product

Question 21

What is a Decomposition reaction?

Answer 21

When one compound breaks down into two or momre simpler compounds

Question 22

What is a Single Displacement Reaction

Answer 22

One free element replaaces another element in a compound

Question 23

What is a Double Displacement Reaction

Answer 23

the metal ions of two different inonic compounds exchange places

Question 24

When naming Monovalent Binary Ionic compounds..

Answer 24

The first element(metal) keeps its name
The second element(non-metal) has its name modifies to end in “ide”

Question 25

When naming covalent compounds…

Answer 25

The name of the first non-metal is modified by adding a prefix to represent the number of atoms present in the element
The name of the seccond non-metal is modified by adding a prefix and changing the ending to “ide”

Question 26

What is an acid?

Answer 26

a covalent compound that produces hydrogen ions when dissolved in water. HYDROGEEN IS ALWAYS WRITTEN FIRST

Question 27

What is a Base?

Answer 27

an ionic compound that produces hydroxide ions when dissolved in water. HYDROXIDE WILL ALWAYS BE IN THE SECOND POSITION

Question 28

What is neutralization?

Answer 28

when an acid and a base are mmixeed they react to neutralize each other which brings the pH closer to 7