Chemistry- Element, Compound, Mixture

Question 0

Atom

Answer 0

The simplest building block of matter that still retains the properties of the original substance

Question 1

Gas

Answer 1

Highly compressible

Question 2

Pure substance

Answer 2

Has a fixed composition and well defined chemical and physical properties

Question 3

Elements

Answer 3

• has only 1 type of atom
• can not be broken down by chemical means
• diamond, nichrome wire

Question 4

Compounds

Answer 4

• consists of 2 or more DIFFERENT elements

- can be broken down by chemical means

Question 5

Diatomic Elements

Answer 5

H2, O2, F2, Br2, I2, N2, Cl2

Question 6

Mixture

Answer 6

Consists of two or more substances, each retains its individual properties

Question 7

Heterogeneous mixture

Answer 7

Visibly distinguishable parts

Question 8

Homogeneous mixture

Answer 8

The same throughout (uniform)

Question 9

Filtration funnel

Answer 9

• separates solids and liquids

- solids can not pass through filtration paper

Question 10

Decantation

Answer 10

Pour the water out, solid stays at bottom

Question 11

Distillation

Answer 11

• separation of liquids based on boiling points

- works if liquids dissolve with one another

Question 12

Chromatography

Answer 12

Separates substances based on their ability to move in a mobile phase

Question 13

Separating funnel

Answer 13

• separates liquids based on polarity

- works only if the liquids DO NOT MIX with one another

Question 14

Centrifuge

Answer 14

• separates solids and liquids

- most useful when the solids ARE EXTREMELY SMALL