Chemistry 1A Quiz Buster 1

What is the symbol for Copper?

• Co

• C

• Cu

• Cp

Which of the following elements tend to form a cation?

• S

• F

• Cl

• K

How many electrons does O^2- have?

• 4

• 6

• 8

• 10

Which of the following is an example of a homogenous mixture?

• Soil

• Sand

• Metal Alloy

• None of the Above

I have 3.0 moles of nitrogen gas, what is its mass?

• 84 g

• 84.0 g

• 42 g

• 42.0 g

What is the concentration of a solution formed by dissolving 6.28g of NaCl in water to make a 100ml solution?

• 1 M

• 1.07 x 10^-3 M

• 1.07 mol

• 0.107 mol

If an atom has 17 electrons and a mass of 35, how many neutrons does it have?

• 17

• 18

• 35

• 52

Which is the correct balanced equation?

• C2H6O + O2 -> CO2 + H2O

• 2C2H6O + 7O2 -> 4CO2 + 6H2O

• C2H6O + 3O2 -> 2CO2 + 3H2O

• None of the Above

Elements and compounds are:

• Types of mixtures

• Comprised of only one element

• Pure substances

• Heterogeneous

How many molecules are in 35 g of CH₄?

• 13.16875 x 10^23

• 1.32 x 10^23

• 1.3 x 10^24

• 1.32 x 10^24