Download UNIT 5-Ch 11-12 studyguide 2017

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Date:_____________
Unit 5: SCIENCE STUDY GUIDE: Chapter 11-12
Atoms and the Periodic Table
VOCABULARY: Match the following terms to the correct definition.
1) electron___________
A) part of the nucleus of
the atom – positive charge
2) proton ______
B) a negatively-charged
subatomic particle
3) isotopes ______
C) the particles of the
nucleus that have no charge
D) varieties of the same type of atom that
have different numbers of neutrons
4) neutrons_________
5) electron cloud ________
E) an atom that has an unequal
number of protons and electrons
6) nucleus_________
F) tiny, dense, positively- charged
region in the center of an atom
7) atom_______
G) The place inside the atom
where electrons will probably be
8) ion ________
H) smallest particle into which
an element can be divided
Fill in the blank.
electrons
protons
atomic number
neutrons
electrons
nucleus
protons
10) The electromagnetic force in an atom keeps the
____________________________________ in orbit around the nucleus.
11)______________________________________________ have almost no mass.
12) Most of the mass of an atom is in the ______________________________________.
13) Atoms with the same number of ____________________________________ are the
same substance.
14) The strong force in an atom keeps the ______________________________________
from repelling each other within the nucleus.
15) Every element has a unique ______________________________________________.
16) Draw a boron atom with the following characteristics:
5 protons
5 neutrons
6 electrons
This atom (above) is a(n) _____________________________ because it has ____________
___________________________________________________________________________
Is this atom positively charged, negatively charged, or neutral? Why?
__________________________because __________________________________________
___________________________________________________________________________
17) A Carbon atom has 6 protons, 6 neutrons, and 6 electrons. What would be a neutral
isotope of this atom?
a. 6 protons, 7 neutrons, 6 electrons
b. 7 protons, 6 neutrons, 6 electrons
c. 7 protons, 7 neutrons, 7 electrons
d. 6 protons, 6 neutrons, 7 electrons
18) Which of the following would most likely be the mass number of a regular Carbon
atom?
a.
b.
c.
d.
6
2
12
90
19) Most of the elements in the periodic table are?
a. non-metals b. metalloids
c. metals
d. nobel gasses
20) Which is an ion?
a.
b.
c.
d.
21 protons, 22 neutrons, 21 electrons
21 protons, 21 neutrons, 22 electrons
22 protons, 22 neutrons, 22 electrons
22 protons, 23 neutrons, 22 electrons
21) Which has a negative (-) charge?
a. proton
b. neutron c. electron d. proton + neutron
22) Which has a mass of 1 atomic mass unit (amu)?
a. proton
b. electron
c. neutron d. both protons and neutrons
Complete the sentences using the choices in parentheses.
23) _______________________________ was the person who developed the first
periodic table and arranged the elements according to increasing atomic mass.
(Mendeleev, Moseley)
24) ______________________________ was the person who rearranged the elements in
order of increasing atomic number. (Mendeleev, Moseley)
25) When an element seemed to be missing from the periodic table, Mendeleev
_________________ that the element would be discovered, anticipated the properties of
the missing element and left a gap. (predicted, ignored)
26) A horizontal row of elements is called a __________________________. (group,
period).
27) A vertical column of elements is called a _________________________. (group,
period).
28) Elements in the same _________________ often have similar chemical and physical
properties. (period or group)
29) Elements are classified as metals, nonmetals and metalloids, according to their
___________________________ (atomic mass, properties).
30)
Elements in the periodic table are organized into groups by the number of
_________________ in the outer most energy shell. (electrons, protons)
Use your periodic table to answer the following questions:
1) Which element doesn’t belong in any group?
2) List the two metalloids.
3) What is the atomic number for Copper?
4) Name one non-metals in period 4.
5) Which element has an atomic number of 82?
6) Which element has the symbol Cl?
Classify the information below as Transition metals, Alkali metals, Halogens, Noble
gases, Alkaline-earth metals or Groups with Metalloids/Mixed Groups.
7)__________________________
 Group 1 of periodic table
 Most reactive metals
 React violently in water
 1 electron in outer level
8)_________________________
Group 2 of periodic table
reactive metals
2 electrons in outer level
9) ____________________________
 Group 3-12
 Well-known metals
10) _________________________
Group 13-16
same number of electrons in outer shell
11) _________________________
 Very reactive nonmetals
 7 electrons in outer level
12) ________________________
8 electrons in outer level
(complete set of electrons)
unreactive elements in Group 18
13) What are the names of the electron shells? ( in order from closest to the nucleus)
14) Use the element below to fill in the missing information:
33
As
Arsenic
74.9
# of protons: _________
Atomic number: ____________
Period __________
Chemical symbol: ____________
Group __________
Atomic mass: ______________
Metal, non-metal or metalloid? _______________