Unit 1 review!! - CER, Sig Figs, Dimensional Analysis

Which of the following images best describe the equation AB ---> A + B

• 
• 
• 

How many Significant figures are in 0.0004500

• 4

• 5

• 8

• 9

In an experiment Riley decided he wanted to test the boiling point of ethyl alcohol, and he found that it boiled at 75 degrees Celsius. When he looked in a reference book to see if it matched he found the actual boiling point to be 80. degrees Celsius. What was his percent error?

• 6.00%

• 6.20%

• 6.25%

• 6%

Given the following data from Student A, What can we say about their accuracy and precision?

• Both accurate and precise

• Accurate but not precise

• Precise but not accurate

• Neither accurate or precise

What is the sum of 3.540 + 0.00121 + 23.76

• 27.30121

• 27.301

• 27.30

• 27.3

Convert 450 g to Kg

• 0.045 Kg

• 0.45 Kg

• 4.5 Kg

• 45 Kg

How many significant figures are in 645,000

• 6

• 5

• 4

• 3

What is the volume (in cm³) of a 725 lb block of gold?

Gold has a density of 19.30 g/cm³. (454.00 g = 1 lb).

• 17,100 cm³

• 17,050 cm³

• 17,054 cm³

• 17,054.0 cm³

Solve the following problem with the correct amount of sig figs and units:

8.270 g x 0.0032 g x 600 g

• 15.88 g

• 15.9 g

• 16 g

• 20 g

Which of the following is vaild evidence that supports the claim:

If you study and do the practice assignments you will do well on the exam

• Kristen had the lowest score and did not study or do the practice

• The top three scores all did the practice

• Stephanie had the highest score and she spent the most time studying and did the practice

• all of the above