Download IPC Review Sheet – Atomic Structure

Name: ___________________________
IPC Review Sheet – Atomic Structure
Definitions:
1. Element – a pure substance made of only one type of atom
2. Atom – the smallest part of an element that still retains the properties of that element
3. Isotope – atoms of the same element with a different number of neutrons
4. Nucleus – the center of the atom
Subatomic Particles Chart:
Subatomic Particle
PROTON
NEUTRON
ELECTRON
Charge
Positive
Neutral
Negative
Mass
1 amu
1 amu
0 amu
Location
nucleus
nucleus
electron cloud
Fill in the Blank:
5. The nucleus of an atom contains ___protons___ and _____neutrons___.
6. The nucleus of an atom has a ___positive__ charge.
7. Most of the mass of an atom is located in the __nucleus__.
8. Ernest Rutherford discovered that the atom is mostly ___empty__ ___space__.
9. All atoms of the same element are alike because the ______protons______ are
responsible for chemical behavior.
10. In a neutral atom, the number of __protons_ equals the number of
_____electrons_____.
Short Answer:
11. If an atom has 13 protons, 14 neutrons and 13 electrons, what is the mass of this atom?
___27__
12. What does the atomic number for an element tell you?
The atomic number tells you the number of protons and electrons.
13. How do you calculate the number of neutrons for an atom?
# neutrons = Mass # - Atomic #
Which Element Am I?
14. I am the element in group VIA and period 3. _______Sulfur______
15. I am the element with 14 protons.
_______Silicon____
16. I am the element with symbol Fe.
______Iron____
17. I am the element with 12 electrons.
____Magnesium____
18. I am the element in group IVA and period 2. _______Carbon_____
19. I am the element with atomic number 16. _______Sulfur____
20. I am the smallest element in period 4.
______Potassium____
21. I am the smallest element in group VIIA.
_____Fluorine___
22. I am the element with symbol Ag.
_____Silver______
23. I am the element in group IIA period 6.
______Barium___
Atomic Structure Chart:
ELEMENT
SYMBOL
ATOMIC
#
MASS #
# of
PROTONS
# of
NEUTRONS
# of
ELECTRONS
GROUP
#
PERIOD
#
Carbon
C
6
14
6
8
6
IV A
2
Potassium
K
19
40
19
21
19
IA
4
Lithium
Li
3
7
3
4
3
IA
2
Fluorine
F
9
19
9
10
9
VII A
2
Magnesium
Mg
12
24
12
12
12
II A
3
Phosphorus
P
15
31
15
16
15
VA
3