Covalent Compounds

Question 1

A process where chemicals interact with one another to form a new compound

Answer 1

Chemical Reaction

Question 2

Chemical reaction is a process where ———– , the starting material is turned into a new substance called ————–

Answer 2

Reactants, Products

Question 3

Distinguishing property for the uniqueness of compounds

Answer 3

Change in color/color

Question 4

Heat is released or absorbed when atoms are being broken

An exple.of this is combustion

Answer 4

Change in Temperature

Question 5

Example of change in temperature

Answer 5

Combustion

Question 6

Example of formation of Gas

Answer 6

Effervescence

Question 7

Evolution of Gas

Answer 7

Effervescence

Question 8

—— results when two aqueous solutions upon mixing form an insoluble solid known as a —–

Answer 8

Precipitation, precipitate

Question 9

In a chemical reaction, there are different indicators that can be observed:

Answer 9

color change;
temperature change;
formation of gas; and
formation of precipitates.

Question 10

process of forming new compounds

Answer 10

Chemical reaction

Question 11

Formation of Gas

Answer 11

Effervescence

Question 12

Starting materials

Answer 12

Reactants

Question 13

Reactions where two or more simple substances combine to form new compounds

Answer 13

Synthesis reaction

Question 14

A compound is broken down into it’s simpler or starting elements

Answer 14

Decomposition

Question 15

Decomposition of a compound is possible through the application of:

Answer 15

Heat, energy, Catalyst

Question 16

In decomposition reaction, when electricity is passed through water, it decomposes into its elemental composition:

Answer 16

Hydrogen Gas and Oxygen Gas

Question 17

True or false:

Compounds can also form after a decomposition reaction

Answer 17

True

Question 18

One element replaces a similar element in the compound

Answer 18

Single Displacement Reaction

Question 19

Example of Simple Displacement

Answer 19

Daniell Cell

Question 20

Predicts weather or not single displacement reactions proceed or not

Answer 20

Activity series

Question 21

Most reactive element and least reactive element

Answer 21

Potassium and Platinum respectively

Question 22

Many metals react with acids, and when they react they form ——— as one of the products

Answer 22

Hydrogen

Question 23

When two ionic substances react and exchange ions with one another

Answer 23

Double displacement reaction

Question 24

Combination of Acid and base forming a water salt solution

Answer 24

Acid-base reaction

Question 25

Happens when the cation of a compound combines with an anion compound and form an insoluble solid called ——-

Answer 25

Precipitation reaction, Precipitate

Question 26

Substance reacts with oxygen gas releasing energy in the form of light of heat

Answer 26

Combustion reaction

Question 27

Describes Identities and quantities of substances undergoing physical or chemical change

Answer 27

Chemical Equation

Question 28

Where are reactants and products found on the equation?

Answer 28

Reactant is found on left side, product is found on right side

Question 29

Notions used in chemical reactions

Answer 29

Arrow
Plus sign
Double arrow
State of compound or molecule

Question 30

Separates reactants from products, usually read as ‘yields’

Answer 30

Arrow

Question 31

Separates individual substances in each side

Answer 31

plus sign

Question 32

Denotes a reaction in equilibrium

Answer 32

Double arrow

Question 33

Part of the chemical formula.of reactants and products, found at the bottom right

Answer 33

Subscripts

Question 34

Placed in front of formulas to indicate the number of molecules on the substance

Answer 34

Coefficients

Question 35

True of false:

You can change the subscript of an element in a chemical formula

Answer 35

False

Question 36

Atoms are neither created nor destroyed

Answer 36

Law of conservation of Mass

Question 37

Equations cannot be changed by the subscripts but instead by…?

Answer 37

Coefficients

Question 38

Has equal amount of atoms per species involved, both in reactant and product side

Answer 38

Balanced Chemical equation