Semester Exam 2023 Review Part 1

Significant Figures

100

12000 has how many significant figures?

2

200

0.00730 has how many significant figures?

3

300

Do the following calculation and round appropriately:

7.895 + 3.4

11.3

400

How many significant figures should the final answer of the following calculation have? 

7.895 / 34

2

500

How many decimal places should the final answer of the following calculation have? 

(67.89 x 23.6) / 42.8

1

Scientific Notation

100

The coefficient of the scientific notation should be between what numbers?

1-9

200

In scientific notation, the coefficient is either multiplied or divided by what factor?

10

300

Convert this value into scientific notation:

0.147

1.47 x 10^-1

400

Convert this value into standard notation:

1.263 x 10³

1263

500

Perform the following calculation:

(8.25x10¹²) x (2.11x10^-17) =

1.74 x 10^-4

Scientific Variables

100

What are the steps of the scientific method?

1. Make an observation

2. Make a hypothesis

3. Design an experiment

4. Collect data

5. Analyze data

6. Draw conclusions

7. Communicate findings and relevance 

200

What is the proper format of a Hypothesis in most high school science classes?

If... Then... Because statement

300

Which variable is the scientist manipulating on purpose?

Independent Variable

400

Which variable is effected by the change in the independent variable?

Dependent variable

500

What is the acronym to remember which axis on a graph should represent the Independent and Dependent variables? 

DRY MIX

Measurements in Chemistry

100

Why can't scientists ever be 100% certain in their measurements?

Limited by the uncertainty of the tools used

200

What is the SI base unit for mass? What tool do you use to measure mass?

Grams ; scale

300

What is the SI Unit for Volume? What tool do you use to measure volume in this class?

Liters ; Graduated glassware (ex: Graduated cylinder, beaker, volumetric flask)

400

How to measure volume of an irregular shaped object?

Water displacement

500

If given a graph where volume is on the x-axis and mass is on the y-axis, what does the slope of the line graph represent?

Density of the substance

King Henry Who?

100

Recite the King Henry slider

King Henry Died By drinking chocolate milk

200

What does the king henry slider represent?

The common metric prefixes

Kilo, Hecto, Deca, Base, deci, centi, milli

300

Convert 19mm to km

0.000019km

400

Convert 7.65 hectoliters to centiliters

7650cm

500

Convert 65 inches to Decameters

(2.54cm = 1in)

0.1651Dm