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Atoms & the Periodic Table Flashcards | StudBud
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Atoms & the Periodic Table
Atoms & the Periodic Table
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#atoms #periodic
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1
The ______ is a chart organize the elements according to repeated changes of the properties.
periodic table
metalloid list
mass number
isotope
2
A _________ is a method of representing atoms and the electrons in their outer energy levels
chemical symbol
electron dot diagram
chemical equation
chemical formula
3
Atoms consist of a positively charged center called a(n)
proton
nucleus
neutron
electron
4
The mass of proton is measured in ________.
atomic mass units
minutiae
nanograms
microns
5
Which of the following methods would be most useful for describing atoms?
touching with bare hands
constructing a model
observing in a test tube
isualizing with a microscope
6
Which of the following atomic particles is positively charged?
negatron
electron
neutron
proton
7
Scientists have broken down protons and neutrons into smaller particles called
nuclei
quarks
vacuoles
isotopes
8
Which of the following is the correct chemical symbol for carbon?
Car
Ca
C
Crbn
9
The _________ of an atom is the number of neutrons plus protons.
half-life
mass number
atomic number
nucleus number
10
Mn atomic# is 25 mass number is 55.How many neutrons have in its nucleus?
25
60
55
30
11
Which of the following best describes the three general groups of elements?
solid, liquid, and gas
metals, metalloids, and synthetics
metals, metalloids, and nonmetals
metals, nonmetals, and noble gases
