stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
The Atom, Elements, and the Periodic Table Flashcards | StudBud
Explore
/
The Atom, Elements, and the Periodic Table
The Atom, Elements, and the Periodic Table
35 terms
·
StudBud Administration
·
662 plays
Intro level Chemistry
Flashcards
35 cards
F
Practice quiz
P
Host live
L
Questions
35
Answers
1
All of the following elements can be found in the 4th period
except
...
Br
K
Ne
Ca
2
How many
protons
are in the isotope oxygen-18?
18
32
10
8
3
The scientist who developed the Law of Definite Proportions is
Rutherford
Thomson
Democritus
Proust
4
The atomic number of an element refers to...
the number of isotopes an element has
the number of protons and neutrons an element has
the number of protons an element has
the number of electrons an ion has
5
Which element has 3 energy levels and 6 valence electrons in its neutral state?
sulfur
oxygen
silicon
phosphorus
6
Whose element symbols are the closest to what chemists use today?
Berzelius
Lavoisier
Dalton
Boyle
7
All of the following are elementary particles of an atom
except
bosons
leptons
epsilons
quarks
8
Which element has 2 valence electrons in its neutral state but is
not
an alkaline earth metal?
Pd
He
Ba
Mg
9
Radiation from nuclear decay does
not
usually
include which of the following?
gamma rays
alpha particles
protons
beta particles
10
Which of the following does
not
describe metals?
nonconductor
ductile
lustrous
malleable
11
The transition elements are...
nonmetals
metals
insulators
metalloids
12
What experimental findings led Rutherford to believe that the atom is mostly empty space?
some alpha particles were absorbed by the foil
the shielding of the alpha particle source was ineffective
most alpha particles went through the foil
a few alpha particles bounced off the foil at sharp angles
13
Which of the following concepts was proposed by John Dalton?
atoms cannot be created or destroyed
atoms cannot be broken into smaller parts
all of the above
atoms of an element are all alike
14
Thomson made which of the following contributions to the development of the atomic model?
atoms have isotopes
atoms have a tiny dense nucleus
atoms contain (-) electrons
atoms can be found in a neutral or an ion form
15
Which family of elements has a full outer energy level?
akaline earth metals
halogens
alkali metals
noble gases
16
A mixture of metals is called a(n)...
alloy
molecule
compound
mixture
17
The person to first use the word "
atom"
to describe the fundamental particle of matter was...
Dalton
Democritus
Thomson
Boyle
18
Which of the following elements is
not
diatomic?
carbon
nitrogen
bromine
fluorine
19
The value of an atomic mass unit (amu) is based on the mass of the element...
carbon
oxygen
hydrogen
gold
20
Which element in group 1A is
not
a metal?
Cesium
Potassium
Hydrogen
Sodium
21
What element type is found bordering the stairstep line in the periodic table?
metalloid
gas
nonmetal
metal
22
All of the following elements are mentioned in the Bible
except
...
silver
sulphur
europium
gold
23
A unique feature of Mendeleev's classification of the elements was...
columns in the periodic table
blanks, or holes, in the periodic table
a periodic table organized in octaves (groups of 8)
a periodic table organized in triads (groups of 3)
24
Which of the following would Aristotle recognize as an element?
sulfur
gold
water
silver
25
Which of the pairs below shows an increase in atom size?
K → Na
N → O
S → Cl
Mg → Ca
26
Silicon is a major component of computer microchips because it is a...
liquid
nonmetal
metal
semiconductor
27
The major factor that determines all chemical & many physical properties of an element is...
the isotope of the atom
atom size
number of valence electrons
atom's mass
28
Most of the elements on the periodic table are...
nonmetals
semimetals
metalloids
metals
29
Which of the following gives the number of nucleons in
one
atom?
atomic number
gamma energy
charge
mass number
30
At room temperature, most metals are...
liquids
gases
solids
plasmas
31
Bohr discovered that the colored emissions of light from different elements originate with...
the specific arrangement of electrons in an atom
alpha particle emission
an atom's atomic mass
the specific isotope of an atom
32
The lowest most stable energy state of an atom is called its...
low state
ground state
valence state
energy state
33
Which family has 9 valence electrons?
noble gases
halogens
no families have 9 valence
alkali metals
34
Which family in the periodic table is the least reactive?
alkaline metals
oxygen family
noble gases
halogens
35
Elements in a family (vertical columns) have the same...
number of filled energy levels
number of valence electrons
electron configuration
atomic number
