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Atoms, Elements, and Periodic Table Flashcards | StudBud
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Atoms, Elements, and Periodic Table
Atoms, Elements, and Periodic Table
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Review quiz on basics of models of the atom, and the periodic table of elements.
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1
Which statement is true according to Dalton's theory?
atoms of the same element are exactly alike
atoms of different elements can join to form larger atoms
atoms can be subdivided into smaller particles
atoms of the same element differ in electric charge
2
What is the name of the element found in Group IIIA, Period 4?
Alluminum
Scandium
Silicon
Gallium
3
At room temperature, most of the elements on the periodic table are _____
gases
solids
plasma
liquids
4
Calcium is atomic number 20. How many neutrons must the isotope calcium-44 have?
24
20
44
64
5
The charge of an electron is _______
-1
0
+1
-2
6
Which of these is NOT a property shared by metals?
Tend to be solid at room temperature
are dull and unreflective
are malleable
are good conductors of heat and electricity
7
Atoms of the same group have the same ____
number of neutrons
number of protons
chemical properties
number of total electrons
8
Which group of the periodic table is extremely unreactive?
Groups 2A - Alkaline Earth Metals
Group IA - Alkali Metals
Group 8A - Noble gases
Group 7A - Halogens
9
Which group on the periodic table is best described as "highly reactive metals"?
halogens
noble gases
transition metals
alkali metals
10
According to Bohr's model of the atom, electrons behave like
plants rotating on their axes
waves on a vibrating string
light energy in a vacuum
planets orbiting the sun
11
Which of these elements is not in the halogen family?
Fluorine
Oxygen
Chlorine
Iodine
12
Which pairs of elements would you expect to have the most similar properties?
hydrogen (H) and helium (He)
argon (Ar) and bromine (Br)
nitrogen (N) and oxygen (O)
beryllium (Be) and magnesium (Mg)
13
The two main regions of the atom are the _________ and the __________.
protons and electron cloud
nucleus and cytoplasm
plum pudding and plums
nucleus and electron cloud
14
Which of these is NOT true about Rutherford's experiment?
it showed that the atom has a small, dense nucleus
it proved that atoms exist
it showed the atom is mostly empty space
It involved shooting positive particles at gold foil
15
According to modern atomic theory, it is nearly impossible to determine an electron's exact ___
color
position
mass
charge
16
Which of these elements would you expect to have the greatest reactivity?
Xenon (Xe)
Boron (B)
Cesium (Cs)
Gold (Au)
17
An atom's mass number equals the number of
protons
neutrons
protons plus electrons
protons plus neutrons
18
Atoms have no electric charge because they __________.
have an equal number of charged and noncharged particles
have neutrons in their nuclei
have an equal number of electrons and protons
have an equal number
19
Carbon: atomic #=6, avg. atomic mass=12.0107. What is carbon's most common number of neutrons?
6
7
5
12
20
Which statement about an element's average atomic mass is correct?
It's an avg. weighted so common isotopes have greater effect
It is based on an isotope's charge
it is equal to 1/12 the mass of the most common isotope
It is determined by counting number of isotopes in element.
