Chemistry Chapter 0-1

Question 1

Matter that is large enough to be seen is

Answer 1

macroscopic

Question 2

Chemistry is the study of ___ and the changes that it undergoes

Answer 2

matter

Question 3

Organic chemistry has carbon

Answer 3

true

Question 4

Inorganic chemistry has carbon

Answer 4

false

Question 5

4. Use the data in the table to determine how many millimeters are in two kilometers

Answer 5

2000000 (6 zeros)

Question 6

Quantitative data involves ___ information while qualitative data records descriptions

Answer 6

numerical

Question 7

6. Order the substances for which density data is provided from least dense to most dense

Answer 7

L->G (carbon is after water)

Question 8

7. If you were given 1 milliliter of copper and 1 milliliter of silver, which would weigh more?

Answer 8

silver would weigh more

Question 9

8. Complete the list by calculating the density of carbon dioxide, given that 250.0 mL of carbon dioxide gas has a mass of 0.4997 g.

Answer 9

d=19998kg/m^3

Question 10

When moving from a smaller unit, such as grams, to a larger unit, such as kilograms, the numerical value will

Answer 10

decrease

Question 11

10. Infer a quantitative measurement that can be made from the scene shown

Answer 11

5 1/2

Question 12

Which is the correct value for the prefix deci-?

Answer 12

0.1

Question 13

13. What is the distance that light travels through a vacuum in 1/299,792,458 of a second?
    Use the equation: speed = distance
    Time

Answer 13

1 meter

Question 14

How many dm are equal to a length of 10 cm?

Answer 14

1 dm

Question 15

14. Which of the following quantities is not correctly matched with its SI base unit?

Answer 15

temperature (kelvin (K)

Question 16

Complete the following equation.
100.0 meters+50.000 centimeters+1.0000 kilometer=

Answer 16

1100.5 meters

Question 17

16. Explain how a thermometer can measure changes in temperature

Answer 17

electrical current travels along wire, electrical resistance will change as temperature changes

Question 18

17. Show how to convert the temperature 84.7°C to Kelvin

Answer 18

+273.15

Question 19

Evaluate this dimensional analysis setup:
A paperclip is 3.2 cm long. How many paperclips would be needed to reach the length of a
football field (100 yards) if 1 inch=2.54 cm?

Answer 19

2858 paperclips

Question 20

What are two functions of a conversion factor in dimensional analysis?

Answer 20

1. change units of measurement
   2.equations and calculations having the correct units through a calculation’’

Question 21

Define a base unit

Answer 21

It is a unit of measurement to measure a single quantity

Question 22

What does the SI prefix, micro-, designate? (the number)

Answer 22

10^6

Question 23

Which value is associated with the prefix nano-? (the number)

Answer 23

10^9

Question 24

The odometer indicates the car has traveled 16,453 miles16,453 miles
(1 km=0.62 mi)1 km=0.62 mi This is equivalent to a distance of ___

Answer 24

26,477.04 kilometers

Question 25

A student records the temperature of a mixture of ice and rubbing alcohol as −3.8 K. Is this a valid measurement? Explain your answer

Answer 25

No, absolute zero is the lowest temperature, this answer is not possible.

Question 26

Why do scientific investigations use the SI units of measurement instead of other common units?

Answer 26

Because scientists all around the world understand it and can communicate more easily in this way.

Question 27

27. A car covers a distance of 112.6 km in 1.8 h Calculate its speed in meters per second. Use the formula speed = distance. This is a derived unit so your unit will be m/s

Answer 27

34805s

Question 28

29. A student conducts an experiment to determine the effect of adding salt on the boiling temperature of water. The results are shown below. Which is the dependent variable in this experiment?

Answer 28

The boiling water

Question 28

28. Use the terms accurate, precise both, or neither to describe this scenario. The accepted value is 29.35. Which correctly describes this student’s experimental data?

Answer 28

Neither is highly accurate or precise

Question 29

Which term is defined as the use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process?

Answer 29

Science

Question 30

What is the use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process?

Answer 30

Scientific method

Question 31

32. What is a type of a question that cannot be answered by science?

Answer 31

A value-based question

Question 32

Your friend says that pizza is the most delicious food. Is this a statement that can be tested by science? Explain your reasoning

Answer 32

No, it is not a fact but an opinion

Question 33

What is the term defined as a tentative and testable statement that must be capable of being supported or not supported by observational evidence?

Answer 33

Hypothesis

Question 34

What is the term used to describe an idea based on natural and physical phenomena and is capable of being tested by multiple independent researchers?

Answer 34

Scientific theory

Question 35

What is the term used to describe a well established and highly reliable explanation that may be subject to change as new areas of science and new technologies are developed.

Answer 35

a theory

Question 36

Be able to define a. comparative investigation

Answer 36

COLLECTING data and COMPARING

Question 37

Be able to define b. descriptive investigation

Answer 37

COLLECTING and recording observations NO COMPARING

Question 38

Be able to define c. experimental investigation

Answer 38

a CONTROL is identified

Question 39

Hypothesis

Answer 39

-testable prediction

Question 40

Theory

Answer 40

explanation based on EVIDENCE

Question 41

Law

Answer 41

pattern of results

Question 42

Identify the advantages of models

Answer 42

visuals- it helps to analyze easier and be a way to test a hypothesis

Question 43

Identify the limitations of models

Answer 43

oversimplification-leaving out variables, limited by quality