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[7/1] Unit 1 - Lesson 2 Review Flashcards | StudBud
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[7/1] Unit 1 - Lesson 2 Review
[7/1] Unit 1 - Lesson 2 Review
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Flashcards
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Questions
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Answers
1
Electrons have...
alternating charge
no charge (neutral)
negative charge
positive charge
2
Which is the smallest particle?
atom
solid
compound
molecule.
3
An atom has no overall charge if it contains equal numbers of...
neutrons
electrons and neutrons
always has a charge
protons and electrons
4
Protons have...
positive charge
negative charge
alternating charge
neutral charge
5
Where are protons located?
in the brain of the atom
in the shell of the atom
in the nucleus of the atom
nowhere
6
The atomic number is...
the number of protons and neutrons in the nucleus.
the number of neutrons in the nucleus.
the number of protons in the nucleus.
the number of electrons in the nucleus.
7
All matter is made of
electrons
protons
neutrons
atoms
8
True/False: All matter are made of only 4 elements.
False
True
9
An atom is the smallest unit of a substance that still has the properties of a substance.
True
False
10
Dalton's atomic model states that atoms cannot be
divided
created
all of the these
destroyed
11
Where are neutrons located?
in the shell (cloud) of the atom
nowhere
in the nucleus of the atom
in the brain of the atom
12
Atoms are so small that trillions of atoms can fit into the period at the end of this sentence.
True
False
13
Neutrons have...
neutral charge
alternating charge
negative charge
positive charge
14
Atoms are made of much smaller particles.
False
True
15
He stated that atoms of one element are identical to each other but different from atoms of other elements.
Rutherford
Chadwick
Dalton
Aristotle
16
In 1981, this tool was invented and allowed scientists to see atoms for the first time.
Scanning tuneling microscope
scanning tuneling telescope
scanning tunneling binocular
none of these
17
He believed that matter was made of earth, fire, water, and air
Rutherford
Chadwick
Aristotle
Dalton
18
Where are electrons located?
in the brain of the atom
in the nucleus of the atom
in the shell (cloud) of the atom
nowhere
19
The first element on the Periodic Table of Elements is...
Hydrogen
Hg
Hypothesis
Helium
20
How many protons does an atom with an atomic number of 23 and a mass of 51 have?
51
23
74
28
