Unit 1 Test (Chem / Science)

Last updated about 6 hours ago

21 questions

Note from the author:

Instructions

Unit 1 Test (Chem / Science)

Last updated about 6 hours ago

21 questions

Note from the author:

Unit 1 Test for Chemistry / Physical Science. Contains lab safety, metric system measurements, metric system conversions using dimensional analysis, and accuracy/precision. 

Instructions

Directions:
Be precise with your measurements.
Use correct capitalization for abbreviations when needed. 
You should include a unit if it is not given!
Fully explain yourself on the free response questions. 
You may use a calculator and the metric conversion chart. Raise your hand and let me know if you have any questions as you are working. 

Draggable item		Corresponding Item

Read the scenario below, then answer the questions:

A student needs to measure out 5.0g of salt for a step in a lab experiment. The student obtains a weigh boat, a digital scale, and scoopula. The student turns on the scale, places the weigh boat on the scale, then uses the scoopula to measure out the 5.0g of salt. 

Read the story below, then answer the questions:

Maria was absent the day before a lab. Instead of taking the time to read through the procedure first, she watched her neighbors to find out what to do. 

Draggable item		Corresponding Item

dL is the correct abbreviation for __________.

The correct abbreviation for hectograms is _______.

The length of the black line is _______ cm.

Draw a line/rectangle that has a length of 9.2 centimeters.

Draw a line/rectangle that has a length of 6.0 millimeters.

The volume of liquid shown in this image is ______________ 

Draw the meniscus at 42.0 mL.

Draw the meniscus at 6.5 mL.

63,000 grams is __________ 6.3 kilograms.

Write the conversion factor that compares dekameters and millimeters:
_______ dam = _______ mm

Show your work to solve the following metric conversion:

Convert 2.8 dekameters to millimeters

Write the conversion factor that compares centigrams and kilograms:
_______ cg = _______ kg

Draggable item		Corresponding Item
Graduated Cylinder
Well Plate
Weight Boat
Pipet
Scale / Balance
Beaker

Draggable item		Corresponding Item
Mass		Meters
Length		Liters
Volume		Grams

Unit 1 Test (Chem / Science)

Unit 1 Test (Chem / Science)

Draw a line/rectangle that has a length of 9.2 centimeters.

Draw a line/rectangle that has a length of 6.0 millimeters.

Draw the meniscus at 42.0 mL.

Draw the meniscus at 6.5 mL.

Show your work to solve the following metric conversion:

Convert 2.8 dekameters to millimeters

Show your work to solve the following metric conversion:

Convert 762.4 centigrams to kilograms

Match the lab equipment name with the correct picture.

A student needs to measure out 25.4 mL of water for a lab experiment. What is the best piece of lab glassware to complete this task?

In the scenario, the student made an error. Identify the error(s) in this student's lab procedure. Explain why this step was not done properly and what should have been done instead.

What lab safety error(s) did Maria commit?

Explain why her errors could be dangerous in the lab:

A lab test was performed to find the concentration of hydrochloric acid (HCl).

Here are the results:
Trial 1 = 2.03 M
Trial 2 = 1.98 M
Trial 3 = 2.06 M

The actual true concentration of HCl was found to be 2.00 M.

The results were ...

Match the type of measurement to the base unit:

Draw a line/rectangle that has a length of 9.2 centimeters.

Draw a line/rectangle that has a length of 6.0 millimeters.

Draw the meniscus at 42.0 mL.

Draw the meniscus at 6.5 mL.

Show your work to solve the following metric conversion:

Convert 2.8 dekameters to millimeters

Show your work to solve the following metric conversion:

Convert 762.4 centigrams to kilograms

What lab safety error(s) did Maria commit?

Explain why her errors could be dangerous in the lab:

Unit 1 Test (Chem / Science)

Unit 1 Test (Chem / Science)

Draw a line/rectangle that has a length of 9.2 centimeters.

Draw a line/rectangle that has a length of 6.0 millimeters.

Draw the meniscus at 42.0 mL.

Draw the meniscus at 6.5 mL.

Show your work to solve the following metric conversion:Convert 2.8 dekameters to millimeters

Show your work to solve the following metric conversion:Convert 762.4 centigrams to kilograms

Match the lab equipment name with the correct picture.

A student needs to measure out 25.4 mL of water for a lab experiment. What is the best piece of lab glassware to complete this task?

In the scenario, the student made an error. Identify the error(s) in this student's lab procedure. Explain why this step was not done properly and what should have been done instead.

What lab safety error(s) did Maria commit?

Explain why her errors could be dangerous in the lab:

A lab test was performed to find the concentration of hydrochloric acid (HCl). Here are the results:Trial 1 = 2.03 MTrial 2 = 1.98 MTrial 3 = 2.06 MThe actual true concentration of HCl was found to be 2.00 M. The results were ...

Match the type of measurement to the base unit:

Draw a line/rectangle that has a length of 9.2 centimeters.

Draw a line/rectangle that has a length of 6.0 millimeters.

Draw the meniscus at 42.0 mL.

Draw the meniscus at 6.5 mL.

Show your work to solve the following metric conversion:Convert 2.8 dekameters to millimeters

Show your work to solve the following metric conversion:Convert 762.4 centigrams to kilograms

What lab safety error(s) did Maria commit?

Explain why her errors could be dangerous in the lab:

Show your work to solve the following metric conversion:

Convert 2.8 dekameters to millimeters

Show your work to solve the following metric conversion:

Convert 762.4 centigrams to kilograms

A lab test was performed to find the concentration of hydrochloric acid (HCl).

Here are the results:
Trial 1 = 2.03 M
Trial 2 = 1.98 M
Trial 3 = 2.06 M

The actual true concentration of HCl was found to be 2.00 M.

The results were ...

Show your work to solve the following metric conversion:

Convert 2.8 dekameters to millimeters

Show your work to solve the following metric conversion:

Convert 762.4 centigrams to kilograms