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Atoms And The Periodic Table
Test Description: This will help prepare you for the test on 5/31
Instructions: Answer all questions to get your test result.
1) Which particles are found in the nucleus of an atom?
A
electrons and protons
B
neutrons and protons
C
neutrons and electrons
2) Dmirtri Mendeleev created the first
A
semiconductor
B
chemical reaction
C
periodic table
3) The number of protons in an atom is the element's
A
atomic number
B
group
C
chemical symbol
4) A row of elements in the periodic table is called a
A
period
B
group
C
family
5) An element's properties can be predicted form its
A
number of neurons
B
location on the periodic table
C
number of isotopes
6) Which of the following is a positively charged particle?
A
proton
B
electron
C
neutron
7) Which of the following is NOT a characteristic of most metals?
A
good conductor
B
ductile
C
brittle
8) An element's ____________________ tells the number of protons in its nucleus.
A
atomic mass
B
chemical symbol
C
atomic number
9) Atoms with the same number of protons but different numbers of neutrons are called
A
noble gases
B
isotopes
C
halogens
10) The average mass of all the isotopes of an element are called the element's ___________________________
A
atomic mass
B
supernovas
C
isotopes
11) NONMETALS are good conductors of heat and electricity
A
false
B
true
12) From right to left in the periodic table, the elements are arranged in order of DECREASING atomic mass
A
false
B
true
13) The mass of a PROTON is about one atomic mass unit
A
true
B
false
14) In an atom, the number of protons is equal to the number of electrons
A
false
B
true
15) It is impossible to predict the properties of an element by its position in the periodic table
A
false
B
true
16) Heat and electricity can flow easily through metals.
A
true
B
false
*select an answer for all questions
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