Alchemy Quiz 01

What additional equipment makes it possible to use the piece of lab equipment (Bunsen burner) shown?

• A

• B

• C

• D

Answer explanation

You need a striker (which makes sparks) to ignite the gas that comes from a Bunsen burner.

Tags

NGSS.MS-PS1-6

NGSS.MS-PS3-3

What is the correct reading for the volume of water in the graduated cylinder?

• 16 mL

• 16.5 mL

• 17 mL

• 17.5 mL

• 18 mL

Answer explanation

The curve of the liquid is called a meniscus. When reading the volume, you need to imagine a straight line from the bottom of the curve.

Assume that an object has been placed in the pan of a triple beam balance. The scales of the balance are shown. What is the mass of the object?

• 90 g

• 190 g

• 190.4 g

• 194 g

Answer explanation

On a triple beam balance, you need to add the values of each mass rider (sliding weight) to find the total mass. The middle mass rider is pointing to 100 g. The outside rider is pointing to 90 g. The smallest slide rider is pointing to the second line before the one. Each of those lines is equivalent to 0.2 g.

Which statement is NOT an appropriate lab safety rule?

• Wear protective glasses or safety goggles for all laboratory work.

• Check chemical labels twice to make sure you have the correct substance.

• Report any laboratory accident, no matter how small, to your teacher immediately.

• Make sure to put used chemicals back in their original bottles.

Answer explanation

You can review classroom science safety rules here: https://docs.google.com/presentation/d/1nJPvSgbvPPx4CAVRrdK1s0Dig7ytf4DOEX_L_cYp6rk/present

Which piece of lab equipment would you use to measure the volume of a liquid most accurately?

• 
• 
• 
• 

Answer explanation

Labeled containers that are taller and slimmer have more accurate lines of measurement.

What is the name of the piece of lab equipment in the illustration?

• flask

• beaker

• graduated cylinder

• test tube

Answer explanation

This resource may be helpful:
https://commons.wikimedia.org/wiki/File:Different_types_of_lab_glassware.JPG

Which of the following is considered matter?

• air

• an idea

• a dream

• heat

• energy

Answer explanation

Matter consists of solids, liquids, and/or gases. Which of these choices contain one of those three things?

Tags

NGSS.MS-PS1-1

Which is NOT part of the definition of matter?

• it has mass.

• It has volume.

• It takes up space.

• It can be seen.

Answer explanation

Many types of matter are not visible to us, and therefore this will not be part of the definition for matter.

Tags

NGSS.MS-PS1-5

Which of the following are NOT matter? (Check all that apply.)

• sound

• hydrogen

• wind

• gasoline

• a river

Answer explanation

Matter is not energy. Movement of matter would not be considered matter.

Which of the following are physical changes? Check all that apply.

• glass breaking

• nail rusting

• paper burning

• sugar dissolving

• eggs cooking

Answer explanation

A physical change is a change in a substance's form or appearance but not its chemical composition, meaning no new chemical compounds are created

Tags

NGSS.MS-PS1-4