AP Chemistry 1 CED Skills and Processes Test PDF

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Ap Chemestry book ED Science work, worksheet on basic chemistry things, easy to complete but here's the answers anyway. :D...

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Name: Skills and Processes of Chemistry Exam Review 1.

You need to swirl a container of liquid while adding a liquid during a reaction. Which would you select to be swirled: a beaker, or an Erlenmeyer flask? Write your choice below and give two reasons for your selection. I would choose an Erlenmeyer flask because it has a narrow neck, so less liquid would go out of the top, whereas a beaker has very open and wide sides, allowing for liquid to come out easily. It is also very easy to pour liquid and make sure it is all being evenly spaced out, as it will land in roughly the same spot as you poured it.

2.

Solids may be dehydrated by heating, in a porcelain crucible, over a burner. What major safety concern exists about hot crucibles? The major safety concern would be burning. A few easy ways to prevent this is wearing gloves or not touching the crucible in the first place. 3.

Given a choice of glassware, all marked at 10 mL, which would you choose to measure 10.00 mL precisely: a beaker, graduated cylinder, or a pipet? Circle your answer.

4.

True or False: measurements produce a quantity (all digits significant) and units. true

5.

Express 15846 J in scientific notation as 1.5846 x 10 J, and as 1.5846 x 10 kJ.

6.

Express 0.00396 g in scientific notation as 3.96 x g.

7.

Calculate 7. 85×10 𝑎𝑡𝑜𝑚𝑠/6. 02×10 𝑎𝑡𝑜𝑚𝑠⋅𝑚𝑜𝑙

8.

Add 0. 307 𝑔 + 18. 19 𝑔 + 3. 009 𝑔 + 101. 7 𝑔 = 1.23206 x 10 𝑔 ; and 1.23206 x 10

9.

Subtract 175 𝑚 − 18. 62 𝑚 = 1.5638 x 10 𝑚 ; and 1.5638 x 10

4

30

23

1

−1

7

= 1.30 x 10 𝑚𝑜𝑙 . 2

2

−1

−1

𝑘𝑔 .

𝑘𝑚 .

10. Under the plots below, match the equation describing the plot, and the type of variation (direct, inverse, or exponential). Keep in mind that 𝑦 is the vertical axis, and 𝑥 is the horizontal axis. The equations are given below: 𝑥𝑦 = 16,

𝑦 = 3𝑥 − 2

𝑥

𝑦 =2

Skills & Processes of ChemistryAP Chemistry 1 CED

Name:

𝑥

Equation:

y=2

xy=16

Variation:

exponetnial

y=3x=2

inverse

direct

11. These densities were recorded for the same item, with a true value of 0. 885 𝑔/𝑚𝐿: 0. 878 𝑔/𝑚𝐿 , 0. 887 𝑔/𝑚𝐿 , 0. 884 𝑔/𝑚𝐿 , and 0. 880 𝑔/𝑚𝐿 . Calculate the average, fill in the deviations from the average for each, and use the average deviation to express the range uncertainty. Lastly, determine the % error. Be sure to give all answers with the proper units. Densities:

0. 878 𝑔/𝑚𝐿

Deviation:

.016 g/mL

0. 887 𝑔/𝑚𝐿

0. 884 𝑔/𝑚𝐿

.025 g/mL

.022 g/mL

Average: 0.862

Uncertainty: 0.171

0. 80 𝑔/𝑚𝐿 .062 g/mL

% Error: : yes

12. Convert the walking speed of 3. 0 𝑚𝑖/ℎ to 𝑚/𝑠, given 1760 𝑦𝑑/𝑚𝑖 and 2. 54 𝑐𝑚/𝑖𝑛. To receive full credit, all conversion terms must show units and cancel neatly so that your reader can see/understand your setup.

3.0 mi =

1760 𝑦𝑑 1𝑚𝑖

x

3 𝑓𝑡 1 𝑦𝑑

x

12 𝑖𝑛 1 𝑓𝑡

x

2.54 𝑐𝑚 1 𝑖𝑛

1𝑚

x 1000 𝑐𝑚 x

60 𝑚𝑖𝑛 1ℎ𝑟

60 𝑠𝑒𝑐

x 1 𝑚𝑖𝑛 = 1.3m/s

13. Convert 10. 0 𝑔𝑎𝑙 to 𝑓𝑙 𝑜𝑧. , given that 32 𝑓𝑙 𝑜𝑧. = 1 𝑞𝑡 . Show all terms with units. 10.0 = 40qt = 1280 fl oz.

14. Multiply 3. 2 𝑚×0. 75 𝑚 = 2.4m. Divide 12. 3 𝑔÷9. 6 𝑚𝐿 = 1.3g. 15. Rate each target for accuracy and precision. Put a ✔ above the target showing systematic error (faulty weapon).

Skills & Processes of ChemistryAP Chemistry 1 CED

Name:

Accuracy:

low

Precision:

high

high low

low low

Skills & Processes of ChemistryAP Chemistry 1 CED...