Test 1B

1. An element has A=28, and Z= 14. The element has:

a. 13 neutrons

b. 15 neutrons

c. 14 neutrons

2. Write the electronic configuration for the element described in question 1.

Which group and which period is the element in?

3. Name the following groups: IIA, IVA, VIA, VIIIA.

4. Give an example of a heterogeneous mixture.

5. Write the electronic configuration for 53I.

6. Calculate the molar mass (M) for the following compounds: ZnSO4, B(OH)3.

(AH=1, AS=32, AO=16, AB=11, AZn=65).

7. How many grams are there in 8 moles of H2SO4 ? (AH=1, AS=32, AO=16)

8. How many moles are there in 120 g of NaOH ? (ANa=23, AO=16, AH=1).

9. Isotopes are elements that have a different number of …….. but the same ….