Chemical Interactions Quiz Investigations 1 & 2

The first periodic table was organized by increasing what?

• atomic mass

• atomic number

• atomic symbol

• chemical formula

Identify this piece of equipment.

• microscope
• cover slip
• magnifying lense or glass
• slide

Marvin and Eloise are doing a lab that requires a test tube. They grab one from their lab station and find that it is dirty and has a small crack near the top. They don't feel like cleaning it or getting a new one, so they use it anyway. As they begin to heat the test tube, it cracks. They don't want to get in trouble, so they quickly brush the broken glass into the trash. What lab safety rules did they break? Choose all that apply.

• Never heat wet glassware.

• Never eat, drink, or chew gum in the lab.

• If glass breaks, notify the teacher for cleanup.

• Never use broken or chipped glassware.

• Do not use flammable chemicals near open flames.

What information on the label is the chemical formula?

• Calcium carbonate

• Chalk

• CaCO₃

Mendeleyev used all 90 naturally occurring elements to form his periodic table

• True

• False

Which of the following is NOT evidence that a chemical reaction occurred?

• color change

• one substance melts

• temperature change

• a new substance

Which of the following shows a single element?

• Na

• C₁₂H₂₂O₁₁

• K

• H₂O

Identify the equipment shown here:

• graduated cylinder
• Erlenmeyer flask
• beaker
• volumetric flask

What was Mendeleyev's purpose for reorganizing the periodic table?

• Fit all the elements on 1 page instead of in a long line

• Put elements with similar characteristics in the same column

• Order the elements from lightest to heaviest.

• Put all metals on 1 side of the table and gases on the otherThis is a wrong answer Put all metals on 1 side of the table and gases on the other

Which item measures more precisely?

• test tube
• beaker
• graduated cylinder