Elements, Compounds, and Mixtures

Question 0

What makes a particle a pure substance?

Answer 0

Only one type of particle can be an element like gold-Au or a compound like H2O- water

Question 1

Pure substance that cannot be cannot be broken down into a simpler substance by physical or chemical means

Answer 1

Element

Question 2

Are elements and compounds pure substances?

Answer 2

Yes

Question 3

What are 3 properties of metals?

Answer 3

Shiny, good conductors of heat and electricity,malleable, and ductile

Question 4

What are 3 properties of non-metals?

Answer 4

Dull, brittle, and poor conductor of heat and electricity, and non-malleable

Question 5

What are 3 properties of metalloids?

Answer 5

Somewhat malleable and ductile, semiconductors, and has properties of metals and non-metals

Question 6

A substance and of two or more elements joined with chemical bonds.

Answer 6

Compound

Question 7

Do ratios for compounds have to be exact?

Answer 7

Yes

Question 8

What is the difference between a compound and an element?

Answer 8

An element is composed of one atom,whereas a compound consists of more than one type of element chemically bonded to each other

Question 9

What is a molecule and how does it relate to a compound?

Answer 9

A molecule contains two or more of any type of atom- ex H2 or H2O

Question 10

How are compounds broken down?

Answer 10

Through chemical changes: ex burning and corrosion

Question 11

What is needed for a chemical change to take place that will break down a compound?

Answer 11

Adding heat or electricity

Question 12

A combination of two or more substances that are not chemically combined

Answer 12

Mixture

Question 13

Identify 3 ways mixtures can be separated.

Answer 13

Distillation, magnetism, filtration, and centrifuge

Question 14

Separates mixtures according to densities

Answer 14

Centrifuge

Question 15

Separation based in different boiling points for each substance

Answer 15

Distillation

Question 16

Attracting magnetic elements such as iron, nickel, and cobalt

Answer 16

Magnetism

Question 17

Separating based on size

Answer 17

Filtration

Question 18

Do ratios in mixtures have to be exact?

Answer 18

No

Question 19

Homogenous mixture uniformly dispersed throughout

Answer 19

Solution

Question 20

The substance that is dissolved ex- NaCl- table salt that is placed in water

Answer 20

Solute

Question 21

The substance that dissolves the solute ex- water in a solution of H2O and NaCl or paint thinner

Answer 21

Solvent

Question 22

Solid solutions of metals or non metals dissolved in metals

Answer 22

Alloy

Question 23

If something is soluble, what does that mean?

Answer 23

Able to be dissolved in about her substance

Question 24

The ability of a solute to dissolve at a certain temperature

Answer 24

Solubility

Question 25

What is the main difference between a homogenous and a heterogenous mixture?

Answer 25

A homogenous mixture is evenly distributed, whereas a heterogenous mixture is not

Question 26

The amount of a particular substance in a given quality of a mixture, solution, or ore.

Answer 26

Concentration

Question 27

What are 3 ways to dissolve solids faster?

Answer 27

Mixing, heating, crushing

Question 28

A mixture evenly dispersed

Answer 28

Suspension

Question 29

A mixture which contains particles that are suspended ex- mayonnaise

Answer 29

Colloid