Second semester

Question 0

Most penetrating type of radiation

Answer 0

Gamma

Question 1

Negatively charged particles emitted firm a nucleus at high speed

Answer 1

Beta

Question 2

Amount of time it takes for half of a radioactive isotope to break apart

Answer 2

Half life

Question 3

The process by which nuclei having low masses are united to form nuclei with larger masses

Answer 3

Fusion

Question 4

Atoms of the same element with a different number of neutrons

Answer 4

Isotope

Question 5

Stopped by a piece of paper a helium nucleus that is the weakest form of radiation

Answer 5

Alpha

Question 6

The splitting apart if a nucleus of a large atom into two smaller atoms

Answer 6

Fission

Question 7

Group 18 inert do not form compounds

Answer 7

Noble gases

Question 8

The most reactive group of metals

Answer 8

Alkali metals

Question 9

Elements that form salts by combining with metals

Answer 9

Halogens

Question 10

Includes Oxygen and Sulfur

Answer 10

Chalcogens

Question 11

React for form bases found in minerals

Answer 11

Alkaline earth metals

Question 12

Form multiple charges used to make pigments

Answer 12

Transition metals

Question 13

Found in the stair step line part metal part nonmetal

Answer 13

Metalloids

Question 14

What does the chemical symbol represent for an element

Answer 14

Name

Question 15

This shows the number of elements in a compound and now they are bonded together

Answer 15

Chemical formula

Question 16

What do dot diagrams represent

Answer 16

Valence Electrons

Question 17

What kind if chemical bond is formed when an equal exchange or transfer of electrons occur

Answer 17

Ionic

Question 18

Hold atoms together in a compound

Answer 18

Chemical bond

Question 19

A group of covalently bonded atoms that acts together as one charged atom

Answer 19

Polyatomic Ion

Question 20

This is an abbreviation used for elements in chemistry

Answer 20

Chemical symbol

Question 21

A chemical bond that occurs when atoms share electrons

Answer 21

Covalent

Question 22

What is an insoluble compound that forms during a chemical reaction

Answer 22

Precipitate

Question 23

Numbers that precede chemical formulas used to balance equations

Answer 23

Coefficient

Question 24

H2O (l)

Answer 24

Liquid

Question 25

Represent oxidation numbers or charges of ions

Answer 25

Subscripts

Question 26

Dissolved in water

Answer 26

Aqueous

Question 27

O2

Answer 27

Gas

Question 28

The number of each type of atom in the compound is shown by these number

Answer 28

Superscripts

Question 29

Na (s)

Answer 29

Solid

Question 30

When two elements or compounds combine to make one large compound

Answer 30

Synthesis

Question 31

When one element replaces another element in a compound

Answer 31

Single displacement

Question 32

When a compound splits apart into smaller compounds or elements

Answer 32

Decomposition

Question 33

When a carbon compound reacts with oxygen to form heat, carbon dioxide, and water

Answer 33

Combustion

Question 34

When and element gains and electron

Answer 34

Oxidation

Question 35

When an element loses an electron

Answer 35

Reduction

Question 36

When two salts react break apart and recombine to make two new compounds

Answer 36

Double displacement

Question 37

When a strong acid reacts with a strong base to produce water and salt

Answer 37

Acid base neutralization

Question 38

Sodium chloride

Answer 38

NaCl

Question 39

Mg(NO3)2

Answer 39

Magnesium nitrate

Question 40

The dune if the oxidation numbers in a neutral compound

Answer 40

Zero

Question 41

The mass of the product must equal the mad if the reactants

Answer 41

Law of conservation of mass

Question 42

Copper (II) sulfate

Answer 42

CuSO4

Question 43

Br2 i2 N2 Cl2 H2 O2 F2

Answer 43

Diatomic molecules

Question 44

The only metal that is a liquid at room temperature

Answer 44

Mercury

Question 45

⚪️+⚫️>⚪️⚫️

Answer 45

Synthesis

Answer 46

Single decomposition

Question 47

⚫️

Answer 47

Decomposition

Question 48

⚪️⚫️+

Answer 48

Double displacement

Question 49

A_____ chemical equation has the same number if atoms of each element on each side of the equation

Answer 49

Balanced

Question 50

Each substance on the left side of the arrow in a chemical equation___.

Answer 50

Reactant

Question 51

Which of the following is a balanced chemical equation

Answer 51

AgNO3+2NaCl>AgCl+NaNO3

Question 52

The energy required to break the original bonds is less than the energy release when new bonds form in an____reaction

Answer 52

Endergonic

Question 53

If heat must be added to a chemical reaction for the reaction to take place the reaction is___

Answer 53

Endothermic

Question 54

What type if reaction is shown in the following chemical equation NH3+HCl>NH4Cl

Answer 54

Synthesis

Question 55

Which of the following could represent a decomposition reaction?

Answer 55

Compound=element+element

Question 56

In a chemical equation the symbol that means dissolved in water is___

Answer 56

(aq)

Question 57

When one element replaces another element in a compound the reaction is a ____reaction

Answer 57

Single displacement

Question 58

A substance that speeds up a reaction without being permanently changed itself is a___

Answer 58

Catalyst

Question 59

Each substance to the right of the arrow in a chemical equation is a__

Answer 59

Product

Question 60

The breaking down if a substance into two or more simpler substances is___

Answer 60

Decomposition

Question 61

Substances that prevent or slow down chemical reactions are called

Answer 61

Inhibitors

Question 62

A chemical reaction in which hear energy is released___

Answer 62

Exothermic

Question 63

Numbers that precede symbols and formulas in a chemical equation are___

Answer 63

Coefficient

Question 64

According to the law of conservation of mass how does the mass of the products in a chemical reaction compare to the mass of the reactants

Answer 64

The masses are equal

Question 65

What is an insoluble compound that forms during a chemical reaction

Answer 65

Precipitate

Question 66

A chemical reaction in which two or more substances combine to form another substance is called a __

Answer 66

Synthesis reaction

Question 67

The burning of wood in a campfire that produces heat and light would be both an___and ____reaction

Answer 67

Exergonic and endothermic

Question 68

When most chemical reaction take place some____in the reactants must be broken a process that requires energy

Answer 68

Compounds

Question 69

Copper(II) sulfate plus sodium iodide yields copper (II) iodide plus sodium sulfate is represented by whose balanced equation

Answer 69

CuSO4+2NaI>NaSO4+CuI2