Properties of Ionic & Covalent Compounds PreLab

What is the purpose of the experiment described in the document?

• To identify the color of different compounds

• To distinguish between ionic and molecular compounds

• To measure the weight of various substances

• To determine the boiling point of water

What hypothesis is being tested in the experiment?

• If we are given known and unknown substances, then we can distinguish between ionic and molecular compounds

• If we heat substances, they will change color

• If we mix substances, they will dissolve

• If we freeze substances, they will become solid

Tags

NGSS.MS-PS1-2

Which piece of equipment is used to observe the physical appearance of substances?

• Hot plate

• Magnifying glass

• Conductivity apparatus

• Scoop

What should be recorded in the data table if a compound does not melt?

• The compound's color

• The compound's weight

• N for not melting

• The compound's boiling point

What is the chemical formula for sucrose mentioned in the document?

• NaCl

• KCl

• C12H22O11

• CoCl2 * 6H2O

Tags

NGSS.MS-PS1-1

Which chemical is used in the experiment that contains cobalt?

• Salt

• Sucrose

• CoCl2 * 6H2O

• KCl

What is the range for recording a conductor in the conductivity test?

• 0-4

• 5+

• 10-15

• 20-25

Salt is ionic. True or False?

• True

• False

• Not enough information

• Sometimes true

Which type of compound has the lower melting points - ionic or molecular?

• Ionic

• Molecular

• Both have the same

• Depends on the compound

Tags

NGSS.HS-PS1-3

Which type of compound is the better conductor - ionic or molecular?

• Ionic

• Molecular

• Both are equal

• Neither