Ch 2 Section 1

Question 1

The scientific method is a

Answer 1

Logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data

Question 2

Observing is the use of the

Answer 2

Senses to obtain information

Question 3

Observation often involves

Answer 3

Making measurements and collecting data

Question 4

Data may be

Answer 4

Qualitative or quantitative in nature

Question 5

Qualitative

Answer 5

Descriptive

Question 6

Quantitative

Answer 6

Numeric

Question 7

Experimenting involves carrying out a

Answer 7

Procedure under controlled conditions to make observations and collect data

Question 8

To learn more about matter chemists study

Answer 8

Systems

Question 9

A system is a

Answer 9

Specific portion of matter in a given region of space that had been selected for study during an experiment or observation

Question 10

When you observe a region in a test tube the

Answer 10

Test tube and its contents form a system

Question 11

When analyzing data scientists attempt to find

Answer 11

Relationships and patterns

Question 12

Generalizations are

Answer 12

Statements that apply to a range of information

Question 13

To make generalizations

Answer 13

Data are organized in tables and analyzed using statistics/ mathematical techniques, often with the aid of graphs and a computer

Question 14

Generalizations are used to

Answer 14

Develop hypotheses

Question 15

A hypothesis is a

Answer 15

Testable statement that serves as a basis for making predictions and carrying out further experiments

Question 16

“Then” part of hypothesis =

Answer 16

Prediction that is basis for testing

Question 17

experimental conditions that remain constant are

Answer 17

Controls

Question 18

Any condition that changes is a

Answer 18

Variable

Question 19

Any change observed is typically because of the

Answer 19

Effects of the variable

Question 20

If testing reveals that predictions are wrong

Answer 20

Hypothesis must be discarded or modified

Question 21

Scientific method is not a

Answer 21

Single fixed process

Question 22

Observing involves

Answer 22

Collecting data
Measuring
Experimenting
Communicating

Question 23

Formulating hypotheses

Answer 23

Organizing and analyzing data
Classifying 
Inferring 
Predicting 
Communicating

Question 24

Testing

Answer 24

Predicting 
Experimentation
Communicating 
Collecting data
Measuring

Question 25

Theorizing

Answer 25

Constructing models
Predicting
Communicating

Question 26

Publish results

Answer 26

Communicating

Question 27

When data supports hypothesis

Answer 27

Scientists try to explain the phenomena by constructing a model

Question 28

Model

Answer 28

More than physical object

Explanation of how phenomena occur and how data or events are related

Question 29

Models may be

Answer 29

Visual
Verbal
Mathematical

Question 30

If a model successfully explains many phenomena it may

Answer 30

Become part of a theory

Question 31

A theory is a

Answer 31

Broad generalization that explains a body of facts or phenomena

Question 32

Theories are successful if they can

Answer 32

Predict the results of many new experiments

Question 33

The process researchers use to carry out their investigations is called the

Answer 33

Scientific method