David observed properties of four different compounds, only
one of which is an ionic compound. His observations are
shown in the chart.
Compound
W
Observations
Is a hard solid, melts
at 44° C, has a
molecular structure
Is a brittle solid, does
not conduct
electricity in water.
has a crystal
structure
Is a hard solid
conducts electricity.
has a molecular
structure
Is a brittle solid,

The answer is a) carbon-12

The answer is probably c. xylem

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.