science 9 term 1

Materials are made up of a __________ of substances that are vital for our survival.

• VARIOUS

• MIXTURE

 is a unit of concentration measuring the number of moles of a solute per liter of solution

(a)  

Determine the molarity when 3.0 moles of sucrose are dissolved to make 2.0 liters of the solution

• 1.0M

• 0.5 M

• 1.49 M

• 1.5 M

0.216 moles of NaCl are dissolved in water making 344 mL of solution. Calculate the molar concentration.

• 0.5 M

• 0.63 M

• 0.61 M

What volume of solution (in mL) will contain 0.257 moles of NaCl if the solution concentration is 0.75 M?

• 3.43 L

• 343 ML

• 3.5 L

A 355-mL soft drink sample contains 0.133 mol of sucrose (table sugar). What is the molar concentration of sucrose in the beverage?

• 0.34 M

• 375 M

Copper sulfate is dissolved in water. Copper sulfate is the 

• solute

• solvent

Which method is used to separate water soluble mixtures of dyes?

(a)  

A neutral atom has 21 electrons and 24 neutrons. This atom is classified as

• metal

• non-metal

Elements listed in the periodic table are arranged in order of increasing

• atomic mass

• atomic number