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Atoms, Elements, Isotopes Flashcards | StudBud

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Atoms, Elements, Isotopes

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Atoms and the Periodic Table

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Questions 10

Answers

1
The valence electrons are (2 answers possible):
closest to the nucleus
the ones on the outermost layer
interacting with the electrons of other elements
not visible with the unaided eye
2
An element is a material:
with more than one type of atom.
that is pure
that has consistent physical properties
consisting of only one type of atom.
3
An element with the atomic number 30 and the mass number 65 has in its nucleus
65 electrons
30 neutrons
35 neutrons
35 protons
4
Plumbum is the latin name for:
Antimony
Plutonium
Iron
Lead
5
Elements that are in the same ________ have a tendency to have very similar chemical properties.
period
group
compound
textbook
6
In the Planetary Model of the atom, electrons are:
in the nucleus
static
moving irregular in the electronic cloud
moving around the nucleus on orbits of different levels of energy
7
The nucleus of an electrically neutral atom contains 47 protons (Silver). How many electrons does this atom have?
61
we cannot know
47
108
8
An isotope is an element with:
the same number of protons but a different number of electrons
the same number of neutrons but a different number of electrons.
the same number of neutrons but a different number of protons
the same number of protons but a different number of neutrons.
9
Metalloids are elements that are:
found only in asteroids
have some properties like metals and some like nonmetals
smaller than metals
have properties different from the metals or the nonmetals
10
The atomic number of an element is:
the total number of neutrons
the number of electrons in the electronic clod
the number of protons in the nucleus
the total number of nucleons