Vertical columns on the periodic table are called
the elements in each column
for #1 for #2
a. grouping a. similar element names
b. families b. similar properties
c. periods c. similar symbols
d. lines d. similar masses

100mg magnesium reacts with 20ml of 1.0m hcl

Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount