Chapter 1: Science Basics

Question 1

What are the steps to a scientific method?

Answer 1

1. Question
2. Hypothesis
3. Experiment
4. Observation
5. Analysis
6. Conclusion

Question 2

Scientific method?

Answer 2

A set of procedures that scientist follow to gain knowledge about the world.

Question 3

Experiment

Answer 3

Ordered investigation that intends to prove or disprove a hypothesis.

Question 4

3 rules of scientific experiment?

Answer 4

1. The experiment must show that a hypothesis is either supported or not supported.
2. Results must be measurable and objective
3. Must be repeatable

Question 5

Scientific theory

Answer 5

Accepted hypothesis

Question 6

Law scientific

Answer 6

Universal fact

Question 7

Use of a control

Answer 7

Using the same factors for experiments

Question 8

An experiment should show that a hypothesis is either

Answer 8

Supported or not supported

Question 9

In order for a scientists work to be excepted other scientists must be able to blank the experiment?

Answer 9

Repeat

Question 10

Which of the following summarizes the hypothesis or a group of hypotheses

Answer 10

Theory

Question 11

Meter means?

Answer 11

Measure

Question 12

Centimeter Centi

Answer 12

.01 one hundredth the size of the base unit

Question 13

Mass VS Weight

Answer 13

Mass is how much of something you have

Weight is the force of gravity on an object

Question 14

Volume

Answer 14

How much space something takes up

Question 15

Density

Answer 15

How tightly packed the particles of an object are

Question 16

Density calculated

Answer 16

Mass divided by volume

Question 17

How to remember Celsius

Answer 17

30 is hot, 20s nice, ten is cold, zero is ice

Question 18

Kelvin facts

Answer 18

The Kelvin never goes negative! Zero Kelvin is the lowest temperature ever. -270°C

Question 19

0°C

Answer 19

273 Kelvin

Question 20

How many key steps to the Scientific method?

Answer 20

There are 6 Key steps.

Question 21

Dimensional analysis

Answer 21

Convert a number from one unit to another unit.

Question 22

Physical property

Answer 22

A characteristic that can be observed or measured without changing the composition

Question 23

6 Examples of physical property

Answer 23

Color, smell, boiling point, mass, volume, temperature

Question 24

Chemical property

Answer 24

A characteristic that can only be determined by changing the chemical identity of a substance

Question 25

List of chemical properties 5

Answer 25

Ability to react with oxygen, reactivity with water, reactivity with acid, pH, flammability

Question 26

Mixture

Answer 26

Material made up of two or more substances that are physically mixed but not chemically combined

Question 27

Element

Answer 27

A pure substance made up of only one type of Adam.

Question 28

Examples of elements

Answer 28

Hydrogen, sodium, neon, gold, and copper

Question 29

Compound

Answer 29

A pure substance that is made up of two or more different elements that are chemically combined

Question 30

List for compounds

Answer 30

H2O water, CACO3 limestone, NACI salt, CO2 carbon dioxide

Question 31

Phase change

Answer 31

A transition from one state of matter to another

Question 32

A phase change is a physical change

Answer 32

Physical changes do not affect the composition of a substance. Ice is melted into water it’s heated and steam forms it is still all water

Question 33

Name the two types of mixtures

Answer 33

Homogeneous and heterogeneous

Question 34

Homogeneous

Answer 34

A mixture that is uniform throughout, also called a solution.

Question 35

Heterogenius

Answer 35

A mixture that is not uniform throughout

Question 36

Retention factor RF

Answer 36

The distance the die traveled compared to the total distance the solvent traveled

Question 37

Ways to separate mixtures 8

Answer 37

Manual, magnetism, dissolving, filtration, evaporation, crystallization, distalization, chromatography.

Question 38

What is the condensation point of water

Answer 38

212°F