Chem

Question 1

Define matter

Answer 1

Takes up space and has mass

Question 2

Homogenous

Answer 2

A mixture that looks all the same

Question 3

Heterogenous

Answer 3

The mixture looks different throughout

Question 4

4 phases of matter

Answer 4

Solid, liquid, gas, and plasma (the funky one in stars)

Question 5

What is the simplest form of an element

Answer 5

An atom (after that its just protons & boring stuff)

Question 6

Mixtures

Answer 6

Simply the physical combination of elements or substances; composition may vary.

Question 7

T/F You can separate the substances of a mixture.

Answer 7

T

Question 8

Solution

Answer 8

A mixture with very small particles, .1 nm - 1nm; impossible to see; rubbing alchohol, vinegar

Question 9

Colloids

Answer 9

Particles scatter light; 1nm-1000nm; paint, paint, milk

Question 10

Suspension

Answer 10

Particles are large enough to settle; orange juice, salad dressing.

Question 11

Physical property

Answer 11

Something that can be observed without changing its composition.

Question 12

How do you know a chemical chance has occurred?

Answer 12

It forms something new and different. ie cake batter - cake

Question 13

Name some physical characteristics

Answer 13

Taste; Density; Smell; color; solubility; freezing point; state; boiling point; Polarity; hardness; luster; malubility; flexibility; porosity; viscosity; magnetism; ph

Question 14

Chemical properties examples

Answer 14

Reactivity; flammability; oxidation; carbonation

Question 15

Proton location, charge, and mass

Answer 15

Nucleus, positive, 1 A.M.U.

Question 16

Neutron location charge and mass

Answer 16

Nucleus, no charge, 1 A.M.U

Question 17

Electron Location, Charge, Mass

Answer 17

Electron cloud, Negative, 1/1836 A.M.U.

Question 18

Atomic number

Answer 18

The number of protons in an atom

Question 19

What characteristics do all the elements in the same family share?

Answer 19

They share the same number of electrons in their outer layer. (Valence electrons)

Question 20

What is the same for all elements in a particular period/row?

Answer 20

They have the same number of electron orbitals.