Chemistry Exam 1

Question 0

The measure of the quantity of matter

Answer 0

Mass

Question 1

A substance is a broken down chemically into similar substances

Answer 1

Compound

Question 2

The method used by scientists to clearly present the Certainty uncertainty of measure

Answer 2

Significant figures

Question 3

A measure of the force of gravity upon An object

Answer 3

Weight

Question 4

The state of matter that is characterized by particles that are closely packed together But capable of moving

Answer 4

Liquid

Question 5

the energy possessed by matter due to its motion

Answer 5

Kinetic energy

Question 6

Two or more elements that are physically mixed but are not chemically combined

Answer 6

Mixture

Question 7

The smallest particle of an element

Answer 7

Atom

Question 8

The point at which a liquid changes into a gas

Answer 8

Boiling point

Question 9

The mass per unit volume of a substance

Answer 9

Density

Question 10

The principle that every system left to itself will turn towards disorder

Answer 10

Second law thermodynamics

Question 11

Numbers that result from counting

Answer 11

Exact numbers

Question 12

The state of matter that is compressible

Answer 12

Gas

Question 13

A reaction were the product has a higher heat energy content than the reactants

Answer 13

Endothermic reaction

Question 14

The law that energy can be neither created nor destroyed

Answer 14

The law of conservation of Energy or the first law of thermodynamics

Question 15

Who propose a planetary model of the Atom

Answer 15

Rutherford

Question 16

Who propose the plum pudding model of the Atom

Answer 16

JJ Thompson

Question 17

Sir James Chadwick is credited for finding which subatomic particle

Answer 17

The neutron

Question 18

What do we call a positively or negatively charged Adam

Answer 18

Ion

Question 19

Adam of the same element but differs in its mass number

Answer 19

Isotope

Question 20

For element what is considered to be simply an average of all the masses of the isotopes of that particular atom

Answer 20

Atomic mass

Question 21

A subatomic particle that has a negative charge

Answer 21

Electron

Question 22

The scientist that discovered cathode rays

Answer 22

Julius Plucker

Question 23

The element most found in the universe

Answer 23

Hydrogen

Question 24

A method of separating a complex mixture by color

Answer 24

Chromatography

Question 25

A property that can be described to the object simply by looking at it

Answer 25

Physical property

Question 26

The signs of a chemical change

Answer 26

The changing color formation of a precipitant, formation of a gas, The absorption of heat

Question 27

Homogeneous

Answer 27

The same throughout a mixture

Question 28

The cutting of wood

Answer 28

Physical

Question 29

The cooking of meat

Answer 29

Chemical

Question 30

what is defined as a proton or neutron

Answer 30

Nucleon

Question 31

Texture

Answer 31

Physical

Question 32

Rust resistant

Answer 32

Chemical

Question 33

What is The atomic number of any element

Answer 33

The number of protons in the element

Question 34

What is the mass number

Answer 34

The sum of the protons and neutrons for that element

Question 35

The name given to a negatively charged ion

Answer 35

Anion

Question 36

A homogeneous Part of a system that is in contact with but physically distinct from another part of the system testing

Answer 36

A phase

Question 37

The name of the Theory In which protons and neutrons are said Theoretically Said to be composed of smaller Particles

Answer 37

Quark theory

Question 38

The central part of an Adam I contains the protons and neutrons

Answer 38

The nucleus

Question 39

Subatomic particle found in the nucleus which is positive

Answer 39

Protons

Question 40

The process of purifying a liquid by By boiling it and collecting the vapor

Answer 40

Distillation

Question 41

The Instrument that is used to determine the isotopes present in an element in their abundance in their masses

Answer 41

A mass spectrometer

Question 42

What is the numerical value of Avogadro's number

Answer 42

6.022×10^23rd

Question 43

A symbolic representation which specifies the elements present and a compound

Answer 43

The Chemical formula

Question 44

What is the mass in grams of one mole of a substance

Answer 44

Molar mass

Question 45

What is the smallest particle of a per substance Which possesses a unique set of properties And is capable of independent existence

Answer 45

Molecule

Question 46

What is Avogadro's number of anything

Answer 46

One mole

Question 47

What is the relationship between a mole and Avogadro's number

Answer 47

Avogadro's number is one mole of a substance

Question 48

Why are empirical formulas Not practical to identify a Molecular substance

Answer 48

Because it won't give you all the information you need

Question 49

What is another name for the empirical Formula

Answer 49

The formula unit

Question 50

The formula of an actual molecule that is used represent molecular compounds

Answer 50

The molecular formula

Question 51

Which type of Reaction Involves one substance breaking down into 2 or more substances

Answer 51

Decomposition

Question 52

Which specific type of decomposition reaction as a result of a product or react being heated

Answer 52

Thermal decomposition

Question 53

What reaction involves interchanging of positive and negative ions

Answer 53

Double displacement

Question 54

A chemical equation that shows Only those items that react and ignores the spectator ions

Answer 54

Net ionic equations

Question 55

The reactant that determines the amount of product that can be made

Answer 55

Limiting reactants

Question 56

The law that says the sum of the masses of the products is equal to the sum of the masses of the reactants

Answer 56

The law of conservation of mass

Question 57

Another name for combination reaction

Answer 57

A synthesis reaction