matter

Question 1

what is the kinetic molecular theory

Answer 1

1) all matter is made up of atoms
2) atoms are always moving
3) there are spaces in between atoms
4) molecules can move in the empty spaces of other molecules

Question 2

extensive properties

Answer 2

depends on the amounts of substance

present; state, mass, etc

Question 3

What are intensive properties?

Answer 3

depends solely on the nature of the

compound, not how much is present; boiling point, chemical formula, etc

Question 4

Element

Answer 4

substance which cannot be separated into

simpler substances as a result of a chemical process

Ex: silver metal, copper metal, H gas

Question 5

Atom

Answer 5

smallest possible unit of an element which retains

the fundamental properties of the element

Ex: Ag, Au, H

Question 6

Molecule

Answer 6

cluster of two or more atoms held together

strongly by electrical forces

Ex: H2O, CH3COOH

Question 7

Ion

Answer 7

atom or molecule which possesses an electrical

charge

Ex: Na+, Cl-

Question 8

Compound

Answer 8

pure substance made of 2 or more atoms

Question 9

Phase

Answer 9

any part of a system which is uniform in both

composition & properties

Question 10

Homogeneous substance

Answer 10

consists of only one phase

Question 11

Heterogeneous substance

Answer 11

consists of more than one phase

Question 12

Mixture

Answer 12

system made up of two or more substances, whose

amounts can be varied

Question 13

Mechanical mixture

Answer 13

heterogeneous mixture of two or more

substances

Question 14

Solvent

Answer 14

component in a solution which exists in the

greater quantity

Question 15

Solute

Answer 15

component in a solution which exists the

smaller quantity

Question 16

What thing is still called a solvent even if it exists in the smaller quantity?

Answer 16

Water

Question 17

solution

Answer 17

homogeneous mixture of two or more substances