Download Skill Sheet 18 – A Continued

9PS Unit 2 Review - Atoms
Name: ____________________
Part 1 – What are isotopes?
1. What is an isotope? ________________________________________________________________________________
2.
What subatomic particle is most associated with isotopes? ___________________
3.
Give the correct Element name, then give the correct # of protons, neutrons, and electrons for each isotope formation.
7
a. 3 Li
b.
28
14
Si
c.
19
9
F
d.
16
8
O
Element
________________
______________
______________
_______________
Proton
________________
______________
______________
_______________
Neutron
________________
______________
______________
_______________
Electron
________________
______________
______________
_______________
Part 2 – What is the atomic mass?
4. What 2 subatomic particles make up the mass number? __________________________
5.
For each of the following elements determine the most common isotope.
a. sodium (Na)
_______________
b. Beryllium
________________
c. calcium
_______________
d. Carbon
________________
e. phosphorus
_______________
f. argon
________________
Part 3 – What are ions?
6. How do you know the # of electrons in a neutral atom? ____________________________________________________
7.
What are ions? ____________________________________________________________________________________
8.
What subatomic particle is associated with ions? ____________________
9.
Determine the ion charge of the elements below.
a. lithium with 3 protons and 2 electrons
_______________
b. chlorine with 17 protons and 18 electrons
_______________
c. sulfur with 16 protons and 18 electrons
_______________
d. beryllium with 4 protons and 2 electrons
_______________
Part 4 – More Practice – but this time with ion charges
10. Give the correct # of protons, neutrons, and electrons for each isotope formation.
7
a. 3 Li 1+
b.
41
20
Ca 2+
c.
19
9
F 1-
d.
16
8
O 2-
Proton
________________
______________
______________
_______________
Neutron
________________
______________
______________
_______________
Electron
________________
______________
______________
_______________
Part 5 -- Scientists
11. Briefly describe what each person did regarding the atomic theory.
John Dalton ______________________________________________________________________________________________
JJ Thompson _____________________________________________________________________________________________
Ernest Rutherford _________________________________________________________________________________________
Niels Bohr _______________________________________________________________________________________________
James Chadwick ___________________________________________________________________________________________
Part 6 -- Part of the Atom
12. Name the 3 subatomic particles. Describe their location in the atom and their charge.
13. What is the charge of the nucleus? __________
Part 7 -- Important Terms
7
3
14. Label these 3 items.
______________
Li
Explain the charge
1+
______________________
15. Define the following:
Atomic number: ____________________________________________________________________________
Mass number: _____________________________________________________________________________
Neutral: __________________________________________________________________________________
16. If you change the # of electrons, you change the _____________
If you change the # of protons, you change the _____________
If you change the # of neutrons, you change the _____________
Part 8 -- Forces
17. What subatomic particles are represented in the diagram?
_______________________________________________
Use arrows to show whether they will attract or repel.
What are the 2 main forces that hold the atom together? Explain each with respect to the subatomic particles.
________________________________________________________________________________________
________________________________________________________________________________________
Part 9 - Spectroscopy
18. Draw an arrow (and label it A) showing the direction an electron would move
when energy is being absorbed.
Draw an arrow (and label it E) showing the direction an electron would move
when energy is being emitted.
Why are the spectral lines different colors?
V
A
I
B
G Y
O
R
B