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Periodic Table! Flashcards | StudBud
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Periodic Table!
Periodic Table!
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7th grade chemistry
Flashcards
31 cards
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Questions
31
Answers
1
There can be up to ____ electrons in the 2nd energy shell.
18
8
2
4
2
Sodium catches fire when it hits water. What is happening?
Lustering
Magic
Conducting
A reaction
3
True or False: Poor metals have a high melting point?
True
False
4
The _____ number is the amount of protons or electrons in an atom.
Atomic
Phone
Mass
Jersey
5
A collection of elements on the periodic table with similar properties are....
Families
Tables
Compounds
Periods
6
Who was the genius that created the periodic table and got it right the first time?
Albert Einstein
Dmitri Mendeleev
Ernest Rutherford
7
True or False: There are more metals than non-metals on the periodic table.
False
True
8
These spoons are an example of...
Conductor
Malleable
Dense
Reactive
9
The periodic table has vertical columns called ________
Periods
Tables
Rows
Groups/ families
10
What is the basic building block of an element?
Matter
Electron
Atom
Proton
11
An atom is made up of proton, electron, and ________
DNA
Oxygen
Neutron
Matter
12
A malleable metal means?
It can be shaped with pressure
it has a high melting point
it is very reactive
it conducts electricity
13
True/False - The Noble Gases are very reactive.
True
False
14
Which element is an example of a strong conductor?
Helium
Copper
Chlorine
Oxygen
15
A proton has a _______ charge
Neutral (No Charge)
Positive
Negative
Electric
16
To create table Salt (NaCl), which two periodic groupings need to bond?
Alkali Metals and Halogens
Alkaline Earth Metals and Noble Gases
Transition Metals and Halogens
Poor Metals and Alkali Metals
17
Reactive means ________
Man-made
Responds to other elements
transfers electricity and heat
Reflects light
18
What is the symbol for Sodium?
Na
Sd
So
K
19
What is the atomic number of Boron (B)?
18
10
5
2
20
Brittle means?
Man-made
Smooth
Easily cracked or fractured
soft and bendable
21
An example of an Alkali Metal is....
Phone cord
Battery
Banana
"Open" sign
22
What element is in group 16, period 3
Magnesium
Carbon
Oxygen
Sulfur
23
An example of a a poor metal is.....
Tin-man
Pop can
Superman's home planet
Penny
24
Alkali Metals are know to be the least reactive metals on the periodic table.
True
False
25
The atomic mass (mass number) of an element is equal to ______
# of electrons+protons
# of electrons
# of neutrons+protons
# protons
26
Periods are the ______ rows in a periodic table.
Horizontal
Vertical
Zig-zag
Diagonal
27
A diamond has what characteristics?
Reactive and lusterous
synthetic and dense
Luster and dense
Dull and dense
28
True/False - Electrons are in the nucleus.
False
True
29
What periodic group is Chlorine (Cl) located in?
Noble Gases
Transition Metals
Halogens
Alkali Metals
30
Which element is the most reactive?
Potassium (K)
Krypton (Kr)
Calcium (Ca)
Nickel (Ni)
31
The transition metals are in which groups/families
3-12
13-15
1
18
