Chpt. 3, Elements and Properties

Question 1

chemical properties

Answer 1

properties that describe whether something will undergo a particular chemical reaction; flammability is one example

Question 2

physical properties

Answer 2

any property that is not a chemical property; examples include melting/boiling point, color, mass, and density

Question 3

intensive properties

Answer 3

properties that don’t depend on the amount of material present

Question 4

extensive properties

Answer 4

properties that depend on the amount of material present

Question 5

solids

Answer 5

the hard state of matter

Question 6

liquids

Answer 6

the fluid-like and shapeless state of matter

Question 7

gases

Answer 7

the gas-like state of matter that is shapeless, and that is usually not visible

Question 8

plasmas

Answer 8

gases that have lost their electrons

Question 9

chemical change

Answer 9

when one substance is changed into another by making or breaking chemical bonds

Question 10

physical change

Answer 10

changes that occur when the form of something is changed

Question 11

The Law of Conservation of Mass

Answer 11

states that the products of a chemical reaction will weigh the same as the reactants

Question 12

heterogeneous mixture

Answer 12

a mixture in which not all elements are uniform

Question 13

homogeneous mixture

Answer 13

mixtures in which things have mixed in a completely uniform fashion (also known as solutions)

Question 14

methods to separate the elements of a mixture

Answer 14

filtering, distillation, crystallization (getting a crystal to solidify from a solution, using a variety of different means)

Question 15

element

Answer 15

a pure substance that can only make one type of atom

Question 16

compound

Answer 16

a pure substance that contains only one type of molecule

Question 17

Law of Definite Composition

Answer 17

the relationship and ratios between the various component parts of a reaction will always be the same