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#atoms
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#atomictheory
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
What charge does a proton have?
neutral
happy
negative
postive
2
How do you calculate the number of Neutrons?
Atomic Mass - Atomic Number = # of Neutrons
Atomic mass-# of letters
3
What are groups?
vertical row in periodic table
stripes
polka dots
4
How do you determine the number of electrons
look at atomic mass
look at neutrons
look at number of isotopes
look at number of protons
5
The smallest Unit of matter is called
mat
atoms
atomic theory
mota
6
What is an Isotope?
# of protons
Atom that have the same #of protons different #s of neutrons
7
What is Avogadro's #?
6.02x1023
6.022x10/23
6.054x10/6
6.022x10/24
8
Where are the protons and neutrons located in an atom?
electron cloud
The nucleus
cell wall
cell membrane
9
What charge does an electron have?
negative
postive
happy
sad
10
where are electrons found?
nucleus
africa
electron cloud
11
What is the Atomic Number equal to?
mass
number of neutrons
The number of Protons
12
what is an element?
pure substance that cannot be broken down
isotope
13
how did Rutherford contribute to the Atomic theory?
find america
find nucleus
discover atoms have a positive and negative charge
14
who conducted the Cathode Ray Tube Experiment?
Bhor
Dalton
JJ Thomson
Democritus
15
What does the Law of Conservation of Matter State?
Matter cannot be created or destroyed.
atoms are small
16
Who conducted the gold foil experiment?
Niels
Thomson
Rutherford
Bohr
17
What is Molar mass?
the number of protons
number of electrons
The mass of one mole of a pure substance
18
What are periods on the periodic table?
horizontal row in periodic table
vertical lines
stripes
19
How did Thomson contribute to the Atomic Theory?
Discovered that atoms can be split into smaller particles.
discovered electrons
discovered ice
20
What is a compound?
combination of 2 chemicals
combination of 2 electrons and protons
substance formed when 2 or more different elements combine
