Download Chapter 4 Worksheet 1

Foundations of Matter Worksheet #2 - KEY
Matching
__G___ 1. neutron
A. Matter made of only one kind of atom
__D___ 2. atom
B. What is formed when atoms combine
by sharing electrons
C. Positive electric charge within the
nucleus of the atom
D. Tiny part that makes up matter
__A___ 3. element
__B___ 4. molecule
E. Letter or letters; used to represent
elements
F. What all things are made of; it
occupies space
G. An uncharged particle within the
nucleus of an atom
H. Tiny negative electrical charges that
move around the nucleus of an atom
I. An atom that has lost or gained
electrons
__L___ 5. formula
__C___ 6. proton
__F___ 7. matter
__E___ 8. symbol
__I___ 9. ion
__H___ 10. electrons
__K___ 11. isotope
__N___ 12. atomic number
__J___ 13. periodic table
__M___ 14. mass number
J. Chart that shows all of the elements
classified by similar properties
K. Form of an element with different
numbers of neutrons
L. Symbols put together to show the
elements in a compound
M. Number of protons and neutrons in
the nucleus of an atom
N. Number of protons in an atom
How many of each element makes up the following substances.
15. H2SO4
16. C6H12O6
17. KOH
18. NH4NO3
19. K2Cr2O7
20. Ba(NO3)2
Hydrogen 2
_____________
carbon 6
_____________
sulfur 1
_____________
hydrogen 12
_____________
oxygen 4
_____________
oxygen 6
_____________
potassium 1
_____________
nitrogen 2
_____________
oxygen 1
_____________
hydrogen 4
_____________
hydrogen 1
_____________
oxygen 3
_____________
potassium 2
_____________
barium 1
_____________
chromium 2
_____________
nitrogen 2
_____________
oxygen 7
_____________
oxygen 6
_____________
Complete the following table.
Element
Symbol
Atomic
number
109
Silver
47
47
Mass
number
Protons
Neutrons
Electrons
109
47
62
47
79
199
79
120
79
78
195
78
117
78
29
61
29
32
29
Ag
GOLD
199
79
Platinum
COPPER
Au
195
78
61
29
Pt
Cu
Magic Square(½ point/box, min 6)
Directions: Put the number of the definition from the list below into the square with the appropriate term. Check your answers by
adding the numbers to see if all the sums of all rows, both across and down add up to the same number, the Magic #.
1.
Represented by a symbol; all are found on the Periodic Table
2.
Made a mental model of the atom; Greek philosopher
3.
Used by Rutherford in his experiment; made of two protons and two neutrons
4.
The paths in which electrons circle the nucleus according to the Bohr model
5.
The positive particle in the nucleus of an atom
6.
The tiny positive core of an atom; contains protons and neutrons
7.
Formed the atomic theory model of the atom; English schoolteacher
8.
Discovered the nucleus using his gold foil experiment
9.
Name of Millikan’s experiment
10. Used by scientists to explain something we are unable to see or understand
11. The smallest particle of an element that has the properties of that element
12. Discovered the neutron
13. Current model of the atom; combining theories proposed by Heisenberg, Schrodinger and de Broglie
14. Mass of protons and neutrons
15. Developed the model of the atom in which electrons orbit the nucleus in energy levels
16. The negative particle that circles the nucleus
17. The neutral particle in the nucleus of an atom
18. Proposed the “plum-pudding” model of the atom; discovered the electron
Democritus
2
Dalton
7
Thomson
18___
Chadwick
12___
__ ___
Rutherford
__ ___
Proton
__
__ ___
Quantum Mechanical
__ ___
Neutron
__
___
Nucleus
__
___
Alpha particle
__ ___
Energy levels
__ ___
Oil Drop
8
13
__
___
Electron
16__
__
Total __39__
5
17___
__
Model
10____
__
__39___
Atom
11
6
4___
__
Bohr
Total
__39___
15
__39___
3
__39___
9___
__39___
__
__
__39___
__39____
39