Elements Mixtures And Compounds

Question 1

define molecule

Answer 1

group of atoms that are bonded together

Question 2

define definite composition

Answer 2

elements in a given compound are always combined in the same proportion by mass. eg. C02 will always be one carbon and two oxygens

Question 3

define simple distillation (include the processes)

Answer 3

a process that uses evaporation followed by condensation to separate a solvent from a solution.

Question 4

define fractional distillation

Answer 4

a process used to separate two or more liquids. can be done due to the fact that different liquids have different boiling points

Question 5

define a property

Answer 5

a characteristic of a particular substance (a property of a metal is shinyness )

Question 6

define chromatography

Answer 6

a method used to separate a mixture of soluble substances