Unit 1: What Is Chemistry?

Question 1

Define chemistry

Answer 1

The study of all substances and the changes (physical and chemical) that they undergo

Question 2

Define chemical change and give an example

Answer 2

New substance is formed

Ex: combustion (burning, cellular respiration)

Question 3

Define combustion

Answer 3

Chemical reaction between a hydrocarbon and oxygen

Question 4

List the types of chemistry

Answer 4

1) organic
2) inorganic
3) analytical
4) physical
5) biochemical

Question 5

Define organic chemistry

Answer 5

Study of substances containing carbon

Question 6

Define inorganic chemistry

Answer 6

Study of substances without carbon

Question 7

Define analytical chemistry

Answer 7

Study of the composition of substances

Question 8

Define physical chemistry

Answer 8

Theories and experiments with chemical behavior

Question 9

Define biochemical

Answer 9

Study of the chemical processes in living things

Question 10

Define the scientific method

Answer 10

An orderly and systematic approach used to answer questions about the world around us

Question 11

Steps of the scientific method

Answer 11

1. Observations to find a question or purpose
2. Form hypothesis
3. Perform an experiment and analyze data
4. Draw conclusions
5. Communicate results, redo, and/or modify

Question 12

The scientific method is a ____ process

Answer 12

Semi-linear

Question 13

What does it mean that the scientific method is semi-linear?

Answer 13

The scientific method is step by step, but sometimes you have to go back to earlier steps and modify your experiment and do things again

Question 14

What is the changed or manipulated variable in an experiment?

Answer 14

Independent variable

Question 15

What is a list of directions that tests the hypothesis?

Answer 15

Procedure

Question 16

What is the group in an experiment where there is no change, just normal conditions?

Answer 16

Control

Question 17

What is a paragraph where data is studied carefully?

Answer 17

Analysis

Question 18

What is the variable that depends on/results from the independent variable?

Answer 18

Dependent variable

Question 19

Data is displayed in a:

Answer 19

Graph

Question 20

Group in the procedure where there is a change

Answer 20

Experimental

Question 21

Type of graph that displays data in a number of separate or distinct categories

Answer 21

Bar graph

Question 22

Testable problem that can be proved or disproved

Answer 22

Question

Question 23

_____ is used to solve scientific questions

Answer 23

Scientific method

Question 24

Data is recorded in:

Answer 24

Data table

Question 25

Type of graph that shows how the dependent variable changes in response to independent variable

Answer 25

Line graph

Question 26

Predicted an answer to the question, an if-then statement

Answer 26

Hypothesis

Question 27

What does SI stand for?

Answer 27

Systéme international

Question 28

Define metrication

Answer 28

The process of changing a countries unit into metric units

Question 29

The US officially adopted SI in:

Answer 29

1866

Question 30

Visual observations are:

Answer 30

Qualitative

Question 31

Numerical measurements are

Answer 31

Quantitative

Question 32

When we measure, we use a measuring tool to compare some dimension of an object to a:

Answer 32

Standard

Question 33

Length is measured in

Answer 33

Meter

Question 34

Mass is measured in

Answer 34

Kilograms

Question 35

Volume is measured in

Answer 35

Liters

Question 36

Time is measured in

Answer 36

Seconds

Question 37

Temperature is measured in

Answer 37

Celsius degrees or kelvins

Question 38

What is mass?

Answer 38

Amount of matter (grams measured on a balance)

Question 39

Weight?

Answer 39

Force exerted by the mass of an object, present with gravity (pounds measured with a scale)