Chemistry Glassware and Measurement Quiz

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Questions and Answers

How do you find the difference/required amount of liquid to go from one volume to another?

found by subtraction

What should you do to stabilize the buret setup?

Move the buret clamp to a ring stand with a larger base

What practice will not help you make an accurate volume reading on a buret at the beginning of a titration?

Make sure that the meniscus starts exactly at 0.00 mL

How should you read graduated cylinder measurements?

read from the bottom Signup and view all the answers

Where should the bumper be on the graduated cylinder?

at the top to prevent the cylinder breaking if it falls Signup and view all the answers

From what level should you read the graduated cylinder?

eye level Signup and view all the answers

What kind of glassware is designed to measure one specific volume of liquid?

Volumetric glassware Signup and view all the answers

What type of glassware is capable of measuring a range of volumes of liquid?

graduated glassware Signup and view all the answers

What type of glassware is used for applications in which great accuracy is needed?

graduated glassware Signup and view all the answers

When should the tare button on a balance be used?

if you need to subtract the weight of glassware from your measurement Signup and view all the answers

When using the Tare function on a balance, start by __ Then _ to cancel out the mass. Finally, ____ and record the mass of your sample.

placing the glassware on the balance, Press the tare/zero button, add your sample to the glassware Signup and view all the answers

What are the best practices while sharing a lab balance with other students?

Alert your TA or instructor about any issues with the balance and brush off any chemical dust around the balance after each use Signup and view all the answers

What is the % error formula?

(error/ accepted value) x 100 Signup and view all the answers

What is the error of a measurement?

[Experimental value - Accepted value]/ accepted value x 100 Signup and view all the answers

What is the density formula?

mass/volume Signup and view all the answers

How should your significant figures match up?

Original number has 3 sig figs, your answer should have three sig figs Signup and view all the answers

What is a beaker used for?

temporary containers and rough measurements Signup and view all the answers

What is an Erlenmeyer flask used for?

mixing solutions Signup and view all the answers

What are funnels used for?

used for filtrations and transfers; use with filter paper when filtering Signup and view all the answers

What are graduated cylinders used for?

measure volume of liquids Signup and view all the answers

On a graduated cylinder, how do volume measurements increase?

Bottom (smallest) to top (largest) Signup and view all the answers

Study Notes

Measurement Techniques

Required volume difference calculated through subtraction.
Accurate volume readings on a buret are hindered if the meniscus is set at exactly 0.00 mL at the beginning of a titration.

Buret Stability

For stability, move the buret clamp to a ring stand with a larger base.

Glassware Types

Volumetric glassware measures a specific volume of liquid precisely.
Graduated glassware can measure a range of volumes, suitable for instances where accuracy is necessary.

Proper Use of Graduated Cylinders

Always read measurements from the bottom of the meniscus at eye level.
The bumper should be positioned at the top of the graduated cylinder to prevent breakage from falls.

Balance Functionality

Use the tare button on a balance to eliminate the weight of glassware from measurements.
To use the tare function: place glassware on the balance, press the tare button, then add the sample and record the mass.

Best Practices in the Lab

When sharing balances, inform the teaching assistant about any issues and clean chemical dust from the balance after use.

Error and Density Calculations

Percentage error is calculated by: [(\text{error}/ \text{accepted value}) \times 100].
Error in measurement is determined as: [((\text{Experimental value} - \text{Accepted value}) / \text{Accepted value}) \times 100].
Density is calculated using the formula: mass/volume.

Significant Figures

Keep significant figures consistent: if the original number has three significant figures, your answer should also have three.

Laboratory Glassware Uses

Beakers serve as temporary containers and for rough volume measurements.
Erlenmeyer flasks are designed for mixing solutions.
Funnels are utilized for filtration and transferring liquids, specifically with filter paper during filtering.
Graduated cylinders are specifically used for measuring volumes of liquids.

Measurement Trends on Graduated Cylinders

Volume measurements on graduated cylinders increase from the bottom (smallest) to the top (largest).

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Description

Test your knowledge of essential chemistry concepts related to glassware and measurements. This quiz will help you understand liquid measurement, stability of laboratory setups, and practices for accuracy. Ideal for students learning basic chemistry techniques.