Chapter 1

Question 0

Lost the 7 steps to the scientific method

Answer 0

Question- make a question
Research- do research on the question
Hypothesis- formal ute a hypothesis
Experiment- Do a control experiment 
Data- collect data 
Conclusion- draw a conclusion 
Communicate- share the data

Question 1

Define scientific method

Answer 1

Steps to do a safe and good question answering method

Question 2

Define control group

Answer 2

The group that is not being changed

Question 3

Define independent variable

Answer 3

The variable that changes in the experiment

Question 4

Define dependent variable

Answer 4

The variable the depends on the independent variable

Question 5

Define constants

Answer 5

Variables in the experiment that stay the same

Question 6

What are the 6 classifications of matter

Answer 6

Element
Compound 
Solid 
Liquid 
Gases 
Plasma

Question 7

Define chemical change

Answer 7

An process determined by the atomic and molecular composition and the structure of the substance involved

Question 8

Define physical change

Answer 8

A change from one state to another without a change in chemical composition

Question 9

Define chemistry

Answer 9

Branch of science that deals with the identification of substance of which matter is composed

Question 10

Define reactants

Answer 10

A substance that takes part in and undergoes change during a reaction

Question 11

Define product

Answer 11

A quantity obtained by multiplying quantities together

Question 12

What are the physical characteristics of a solid

Answer 12

Liquid and gas

Question 13

What are the physical characteristics of a liquid

Answer 13

Solid and gas

Question 14

What are the physical characteristics of a gas

Answer 14

Liquid and solid

Question 15

Defined matter

Answer 15

Physical substance in general

Question 16

Define mass

Answer 16

The weight of something

Question 17

Define volume

Answer 17

The amount of space in something

Question 18

Define weight

Answer 18

The amount of mass in something

Question 19

Define quantity

Answer 19

Things that can be described by numbers

Question 20

What are the SI units

Answer 20

International system of units

Question 21

Why are SI units used

Answer 21

Because it is used all over the world

Question 22

Convert 0.00304 kL to mL

Answer 22

3.04

Question 23

Convert 3,452,000 pm to dm

Answer 23

345.200

Question 24

Which is a longer amount of time 3,670,000 ns or 4.080 ms

Answer 24

3,670,000 ns

Question 25

Which is longer 4,000,000 cm or 400.0 km

Answer 25

400 km

Question 26

What are the 2 types of pure substance

Answer 26

Element and compound

Question 27

Define compound

Answer 27

A mixture

Question 28

How does an element differ from compound

Answer 28

Element is only one compound is a mixture of 2 or more

Question 29

How are atoms and molecules related

Answer 29

Molecules are compound atoms

Question 30

What are the 2 differences between compound and a mixture

Answer 30

Compound are the ingredients and the mixture is the mix of 2 compound

Question 31

What is the equation for density

Answer 31

M/v= d

Question 32

What is the equation for mass

Answer 32

D*v = m

Question 33

What is the equation for volume

Answer 33

M/d= v

Question 34

Name the derived unit for each of the following: speed, area, and volume

Answer 34

Meter per second, square meter, and cubic meter

Question 35

What are the seven basic SI units

Answer 35

``` Meter Kilogram Second Ampere Kelvin Candela Mole ```

Question 36

What are the seven basic SI units and what are they used for

Answer 36

``` Meter- length Kilogram- mass Second- time Ampere- electric current Kelvin- temperature Candela- luminous intensity Mole- amount of substance ```

Question 37

What are 2 deprived units for density

Answer 37

Kilogram per cubic meter Ampere per square meter

Question 38

If the mass of an object is 16g and the volume is 2cm 3 what would be the density be

Answer 38

2.67

Question 39

Define atom

Answer 39

The basic unit of a chemical element

Question 40

How many different types of atoms are there

Answer 40

110

Question 41

H2, N2, and O2 are all examples of what

Answer 41

Compound

Question 42

Define allotrope

Answer 42

Each of 2 or more different physical forms in which an element can exist

Question 43

Compounds can or cannot be broken down

Answer 43

Compounds can be broken down

Question 44

Define molecular and structural formulas

Answer 44

Molecular- giving the number of atoms of each of elements present in one molecule of a specific compound Structural- a formula that shows the arrangement of atoms

Question 45

Define mixture

Answer 45

A substance made by mixing other substance together

Question 46

Define homogenous mixture

Answer 46

A mixture in which the constituents don't appear separately

Question 47

Give three examples of a homogenous mixture

Answer 47

Blood Glass of orange juice Soapy water

Question 48

Define heterogeneous mixture

Answer 48

Constituents appear separately

Question 49

Give three examples of heterogeneous mixture

Answer 49

Oil in water Sandy water Orange juice with pulp