Chapter 1 Vocab

Question 1

Atoms

Answer 1

single like *

Question 2

Molecules

Answer 2

of same atom like H2 **

Question 3

Molecules of a compound

Answer 3

like H2O .

Question 4

Mixture of elements and a compound

Answer 4

like a granite countertop * ** .

Question 5

Mixture

Answer 5

matter with multiple diff substances
homogeneous or heterogeneous

Question 6

homogeneous mixture def

Answer 6

looks like 1 thing .. ex filtered sea water

Question 7

heterogeneous mixture def

Answer 7

looks like you can see multiple things… ex sand

Question 8

Physical properties def

Answer 8

we can observe it without altering substance identity

Question 9

physical properties examples

Answer 9

color, hardness, melting point, boiling point, density

Question 10

chemical properties def

Answer 10

how a substance reacts and observe changes of substance identiy

Question 11

chemical properties examples

Answer 11

flammability, corrosiveness, reactivity

Question 12

physical changes def and example

Answer 12

only change how it looks like heating up water

Question 13

chemical changes def and example

Answer 13

changes atom arrangement and how it looks. like lighting stuff up on fire

Question 14

signs of a chemical reaction/change?

Answer 14

temp change, light given off, forms gas, color change, change in odor, explosion occurs, a precipitate forms

Question 15

how do we seperate components of a mixture (3 ways)

Answer 15

filtration, distillation, column chromatography

Question 16

what system for measurements ?

Answer 16

metric!!!!

Question 17

Mass in metric

Answer 17

Kilogram (kg)

Question 18

length in metric

Answer 18

Meter (m)

Question 19

Time in metric

Answer 19

second (s)

Question 20

temp in metric

Answer 20

Kelvin (K)

Question 21

amount in metric

Answer 21

mole (mol)

Question 22

Electric current in metric

Answer 22

Ampere

Question 23

Luminous intensity in metric

Answer 23

Candela

Question 24

what is volume? SI?

Answer 24

a derived unit. SI is meters cubed

Question 25

What does 1 cm cubed equal?

Answer 25

1 mL

Question 26

what is density? SI?

Answer 26

a derived unit. SI is kg/m^3

Question 27

Density equation

Answer 27

D= m/v

Question 28

Velocity equation

Answer 28

V= m/s

Question 29

Base Units are what?

Answer 29

Meter Gram Liter

Question 30

Joule label

Answer 30

kg*m^2 / s^2