ELEMENTS, COMPOUNDS AND MIXTURES

Question 1

A susbtance that cannot be broken down into another substances.
Ex: Iron, Aluminum, Oxygen, and Hydrogen

Answer 1

ELEMENTS

Question 2

Contain two or more atoms that are chemically combined, that is the elements have undergone a chemical reaction.

Answer 2

COMPOUND

Question 3

Can be defined as something that has variable composition. a compound made up of two or more chemical components that are not chemically linked.

Answer 3

MIXTURE

Question 4

2 TYPES OF MIXTURE?

Answer 4

Homogenous and Heterogenous Mixture

Question 5

A mixture in which the components are uniform in the whole solution, its composition is the same throughout and it appears like a single substance,

Answer 5

HOMOGENOUS MIXTURE

Question 6

a mixture in which the composition is not uniform throughout the mixture.

Answer 6

HETEROGENOUS MIXTURE

Question 7

-It have uniform and definite composition.
-Will always have the same composition.
-Are either elements or compounds.

Answer 7

PURE SUBSTANCES

Question 8

6 Separation Techniques of Mixtures?

Answer 8

Decantation, Sieving, Magnetic Separation, Filtration, Evaporation, Distillation.

Question 8

Involves separating a dense, insoluble substance from heterogenous mixture.

Answer 8

Decantation

Question 9

involves separating mixture based on different sizes of components.

Answer 9

SIEVING

Question 10

Is a special form of sieving that separates very fine solid particles from liquid or gas mixture.

Answer 10

FILTRATION

Question 11

Used for separating materials, such as irons, from non-magnetic mateials.

Answer 11

MAGNETIC SEPARATION

Question 12

is used for recovering solids from solution.

Answer 12

EVAPORATION

Question 13

is similar to evaporation, except that evaporated substance, known as distillate is collected.

Answer 13

DISTILLATION