Energy

Question 1

Chemistry is the study of ______, _______, the ________ that matter undergoes and the ________ associated with these changes

Answer 1

Matter, properties, changes, energy

Question 2

Anything that has the capacity to do work or transfer heat

Answer 2

Energy

Question 3

Equation proving matter and energy are inter-changeable

Answer 3

e = mc^2

Question 4

The three ways we sense energy

Answer 4

Motion, light, and heat

Question 5

First law of thermodynamics

Answer 5

Energy can neither be created nor destroyed

Question 6

Second law of thermodynamics

Answer 6

Energy cant be used to do work with 100% efficiency

Question 7

Energy due to the position of an object

Answer 7

Potential energy

Question 8

Energy due to the motion of an object

Answer 8

Kinetic energy

Question 9

_____ energy states are more stable and are favored over ________ energy states

Answer 9

Lower, higher

Question 10

Systems of charges particles

Answer 10

Atoms

Question 11

______ charges attract

Answer 11

Opposite

Question 12

Energy of motion of all nano-scale objects such as atoms and molecules

Answer 12

Thermal energy

Question 13

All matter consists of tiny particles that are in constant motion.

Answer 13

Kinetic Molecular Theory

Question 14

Molecules vibrate in place

Answer 14

Solids

Question 15

Molecules slide around each other

Answer 15

Liquids

Question 16

Molecules travel in straight lines until they collide changing direction

Answer 16

Gases

Question 17

The average kinetic energy of all the particles is known as the

Answer 17

Temperature

Question 18

Energy flows out of the system to the surrounding

Answer 18

Exothermic

Question 19

Energy flows into the system from the surrounding

Answer 19

Endothermic

Question 20

Molecules are held together by ______ bonds

Answer 20

Chemical

Question 21

An SI unit derived for energy

Answer 21

Joule (J)

Question 22

Is the amount of energy needed to raise one gram of water by 1 degree C

Answer 22

A calorie

Question 23

1 calorie = ______ J

Answer 23

4.184

Question 24

1 Calorie = ______ calories

Answer 24

1000 calories

Question 25

Anything that occupies space and has mass

Answer 25

Matter

Question 26

Change in which the matter’s appearance is altered, but the composition remains unchanged.

Answer 26

Physical

Question 27

One or more substances of entirely different composition from the original substances

Answer 27

Chemical

Question 28

Uniform throughout

Answer 28

Homogeneous

Question 29

Not uniform, localized areas with different properties

Answer 29

Heterogeneous

Question 30

The simplest type of substance with unique physical and chemical properties

Answer 30

Element

Question 31

A structure that consists of two or more atoms that are chemically bound together and thus behaves as an independent unit

Answer 31

Molecule

Question 32

A substance composed of two or more elements which are chemically combined

Answer 32

Compound

Question 33

Made from combinations of nonmetals and metals

Answer 33

Inorganic compounds

Question 34

Made from chains and rings of carbons including plastics and polymers

Answer 34

Organic compound

Question 35

A group of two or more elements and/or compounds that are physically intermingles (not chemically bonded)

Answer 35

Mixture

Question 36

Solid to gas

Answer 36

Sublimation

Question 37

Gas to solid

Answer 37

Deposition

Question 38

Solid to liquid

Answer 38

Melting

Question 39

Liquid to solid

Answer 39

Freezing

Question 40

Liquid to gas

Answer 40

Vaporization

Question 41

Gas to liquid

Answer 41

Condensation

Question 42

What is enthalpy

Answer 42

Heat energy