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