Sample Chem T/F

Hydrogen bonds are drawn as dashed lines and form between the negative oxygen and positive hydrogen

• True

• False

The slightly positive oxygen will be attracted to the positive chloride ion

• True

• False

In the drops on the penny lab. The Dependent variable was the amount of salt you changed in each solution you counted and the Independent variable was the amount of salt we changed in each solution.

• True

• False

If the volume of an object is 40 ml and the mass is 80 g then the density would be 0.5 g/ml

• True

• False

The percent sodium dissolved in the ocean is 55%. Its symbol is So

• True

• False

In the water cycle salt stay behind in the ocean because of evaporation

• True

• False

If mass is added to an object, but the volume stays the same the density will increase

• True

• False

If 4000 ml of water has 40 g of salt added to it the salinity would be 10 ttp or 10 oo/o

• True

• False