Download Physical Science Chapter 3 Test

Name: ________________________ Class: ___________________ Date: __________
ID: A
Physical Science Chapter 3 Test
Completion
Complete each sentence or statement.
1. The word atom comes from a Greek word that means "unable to be ____________________."
2. The first person who suggested that matter was made up of atoms was the Greek philosopher
____________________.
3. John Dalton's atomic theory stated that atoms of the same ____________________ are exactly alike.
4. The nucleus of an atom has a(n) ____________________ electric charge.
5. Neutrons and protons are found in the ____________________ of an atom.
6. Atoms have equal numbers of ____________________ and ____________________.
7. Bohr's model of the atom compares electrons to ____________________.
8. According to modern atomic theory, the exact location of a(n) ____________________ is uncertain.
9. A region in which there is a high probability of finding an electron is called a(n) ____________________.
10. The order of elements in the periodic table is based on the number of ____________________ in the nucleus.
11. The ____________________ states that when elements are listed in order of atomic number, similarities in
their properties will emerge in a regular pattern.
12. Because atoms of elements in the same group of the periodic table have the same number of
____________________, they have similar properties.
13. Some elements are highly ____________________ because their outermost energy levels are only partially
filled.
14. The valence electron of a lithium atom is easily removed to form a lithium ____________________ with a
charge of 1+.
15. Isotopes of an element have the same atomic ____________________ but different atomic
____________________.
16. An atom of potassium has an atomic mass of 39 amu and an atomic number of 19. It therefore has
____________________ neutrons in its nucleus.
17. An element's average atomic mass refers to the weighted average of the masses of all of its naturally
occurring ____________________.
18. ____________________, the lightest hydrogen isotope, is the most commonly occurring hydrogen isotope.
19. Group 1 of the periodic table consists of the ____________________, a highly reactive group of elements.
20. Atoms of alkaline-earth metals, such as calcium, have ____________________ valence electrons.
21. The ____________________ are located in the center of the periodic table.
22. The ____________________ are highly reactive elements located in Group 17 of the periodic table.
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Name: ________________________
ID: A
23. Noble gases are nonreactive gaseous elements that are located in Group ____________________ of the
periodic table.
24. The most familiar semiconductor, ____________________, is one of the most abundant elements in Earth's
crust.
25. Neon is an inert gas because its outer ____________________ is full of electrons.
26. Group 17 halogens form compounds by gaining an electron and forming a ____________________.
27. Nonmetals that can conduct heat and electricity under some circumstances are classified as
____________________.
28. The ____________________ is the SI unit that is used for counting small particles, such as atoms.
29. The ____________________ in ____________________ of 1 mol of a substance equals its molar mass.
30. The number of particles in one mole of a substance is referred to as ____________________.
31. Use the periodic table to determine the molar mass of the element listed. Round the molar mass to two places
to the right of the decimal.
scandium ____________________ g/mol
32. Use the periodic table to determine the molar mass of the element listed. Round the molar mass to two places
to the right of the decimal.
zinc ____________________ g/mol
33. Use the periodic table to determine the molar mass of the element listed. Round the molar mass to two places
to the right of the decimal.
phosphorus ____________________ g/mol
34. The molar mass of krypton is 83.80 g/mol. The mass of 5.00 mol of krypton is ____________________ g.
35. The molar mass of nitrogen is 14.01 g/mol. The mass of 0.20 mol of nitrogen is ____________________ g.
36. The molar mass of palladium is 106.42 g/mol. Therefore, 53.2 g of palladium contains
____________________ mol.
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ID: A
Physical Science Chapter 3 Test
Answer Section
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divided
Democritus
element
positive
nucleus
protons; electrons
planets
electron
orbital
protons
periodic law
valence electrons
reactive
ion
cation
number; masses
20
isotopes
Protium
alkali metals
two
transition metals
halogens
18
silicon
energy level
negative ion
anion
semiconductors
mole
mass; grams
Avogadro's constant
44.96
65.39
30.97
419
2.8
0.500
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