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Periodic Table and Atomic Structure Flashcards | StudBud
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Periodic Table and Atomic Structure
Periodic Table and Atomic Structure
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9th Grade Physical Science
Flashcards
35 cards
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Questions
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Answers
1
Which of these is a noble gas?
argon
magnesium
sodium
chlorine
2
T / F The greater the distance an electron has from the nucleus, the less energy it has.
True
False
3
How many electrons are there in an atom of magnesium?
25
55
12
24
4
How many valence electrons in an atom of potassium?
2
7
8
1
5
Who created the foundation of the periodic table of elements?
Democritus
Mendeleev
Aristotle
Leonardo
6
Which of these is an alkali earth metal?
strontium
boron
sodium
oxygen
7
Which of these means it can be stretched and drawn into wire?
conductive
malleable
ductile
lustruous
8
Which of these elements is in group 15 on the PT?
carbon
oxygen
nitrogen
boron
9
The atomic mass of manganese is ...
24.3050
54.938045
12
25
10
How many protons are there in an atom of europium?
99
63
92
68
11
Protons are ________ (charged) and ________.
positively, found outside the nucleus
negatively, found outside the nucleus
positively, found inside the nucleus
neutrally, found inside the nucleus
12
How many valence electrons are in an atom of nitrogen?
4
5
3
7
13
The atomic number of rubidium is ...
226
37
85.4678
88
14
"Atomos" was the name given to atoms by the Greek philosopher Democritus. "Atomos" means .....
extremely small
small
uncuttable
cuttable
15
Which of these is an alkali metal?
calcium
sodium
astatine
aluminum
16
Which of these is an alkali earth metal?
beryllium
iodine
xenon
lithium
17
How many valence electrons are in an atom calcium?
3
2
1
7
18
What does luster mean?
shiny
bendy
is magnetic
can conduct electricity
19
Which of these is true of the first energy level surrounding the nucleus?
it holds a max. of 32 electrons
it holds a max. of 2 electrons
it holds a max. of 18 electrons
it holds a max. of 8 electrons
20
If the atomic mass of a potassium atom is 39, how many neutrons are there in its nucleus?
39
20
30
19
21
Which of these is a halogen?
boron
krypton
sodium
fluorine
22
When something repeats in a continuous pattern it is said to be...
irregular
sporadic
regularly irregular
periodic
23
T / F The majority of the volume (space) of an atom is occupied by the nucleus.
True
False
24
Which of these is a nonmetal?
barium
francium
oxygen
potassium
25
T / F The majority of the mass of an atom is in the region with the protons and neutrons.
True
False
26
T / F Hydrogen is a metal.
False
True
27
Electrons are _________ charged and found __________.
negatively, inside the nucleus
neutrally, inside the nucleus
positively, outside the nucleus
negatively, outside the nucleus
28
Which of these is also a nonmetal?
lithium
sulfur
arsenic
copper
29
Which of these is true of the second energy level surrounding the nucleus?
it holds a max. of 32 electrons
it holds a max. of electrons 18
it holds a max. of 8 electrons
it holds a max. of 2 electrons
30
Which of these is a transition metal?
copper
all of these
iron
nickel
31
Which of these is a metalloid?
neon
magnesium
sodium
silicon
32
True / False Electrons and protons have roughly the same mass.
True
False
33
Which of these is true of nonmetals?
most are brittle
most are NOT good conductors of electricity
all of these
most are dull
34
Which of these is in period 3 on the periodic table?
aluminum
sodium
chlorine
all of these
35
Ferrous oxide is another name for....
lint
rust
mortar
chalk
