How does gravity work?

attraction gets stronger with more mass and small distances

the amount of matter in something

What condition initiates or begins star formation?

gravity and tiny differences in the clumping of matter

Period numbers (1-7) represent what?

How many electron orbits or shells contained in the elements' atoms

What are valence electrons?

electrons in the outer most orbit

In the periodic table, GROUPS are the ...

vertical columns, numbered 1-18

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The Periodic Table of Elements

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Questions 21

Answers

1
How does gravity work?
attraction gets stronger with greater distance and less mass
attraction gets stronger with more mass and small distances
attraction gets weaker with more mass and small distances
attraction gets weaker with less distance and more mass
2
How many valence electrons does Lead (Pb) have? and in what orbit?
4 valence, orbit 5
3 valence, orbit 7
4 valence, orbit 6
6 valence, orbit 4
3
Which two elements have the same number of Valence Electrons?
Silicon (Si) and Carbon (C)
Thorium (Th) and Calcium (Ca)
Lithium (Li) and Beryllium (Be)
Xenon (Xe) and Iodine (I)
4
Ag - Silver belongs to which period and which group?
period 7, group 11
period 5, group 11 or 1B
period 3, group 1
period 5, group 5
5
What force is responsible for Protons and Neutrons being held together in the nucleus?
Gravity
weak nuclear force
electromagnetism
strong nuclear force
6
What are the MOST reactive of all metals? Because they have the lowest amount of Valence Electrons?
Transition Metals
Noble Gases
Alkaline Earth Metals
Alkali Metals
7
The periodic table is a table that organizes the ____________
earth, wind, water, and fire!!
lunch and dinner
Compounds
Elements
8
What is mass?
gravity
the weight
the amount of matter in something
the amount of empty space in something
9
What condition initiates or begins star formation?
gravity and attractive forces
strong nuclear force
matter, gravity, and electromagnetism
gravity and tiny differences in the clumping of matter
10
Period numbers (1-7) represent what?
How many electron orbits or shells contained in the elements' atoms
the number of valence electrons
the number of electrons
The number of protons
11
What force is responsible for electrons being attracted to the nucleus?
weak nuclear force
electromagnetism
gravity
strong nuclear force
12
In the periodic table, PERIODS are the ...
vertical rows, numbered 1b-7b
horizontal rows, numbered 1-7
Vertical columns, numbered 1-18
diagonal stripes
13
Group numbers, 1-18, or 1A-8A - represent or give clues to an element's what?
which number orbit its valence electrons are in
number of electrons
number of protons
number of valence electrons
14
The number of neutrons in an atom can be found by doing what formula?
Atomic mass - atomic number =
Atomic number - atomic mass =
E=MC^2
f=g((m1*M2)/d^2))
15
Which two elements have the same number of ELECTRON ORBITS?
Potassium (K) and Calcium (Ca)
Silver (Ag) and Copper (Cu)
Lithium (Li) and Sodium (Na)
Manganese (Mn) and Cesium (Cs)
16
What causes new elements to form after the Big Bang and the age of just Hydrogen and Helium?
gravity
another big bang
Stars
Planets
17
The atomic number represents an elements number of?
Nuclei
Protons
Neutrons
Electrons
18
What are valence electrons?
electrons in the outer most orbit
electrons without orbits
electrons in the inner most orbit
electrons in middle orbits
19
In the periodic table, GROUPS are the ...
elements that start with G - for "group"
vertical columns, numbered 1-18
diagonal rows
horizontal rows, numbered 1-7
20
The number of electrons in a NEUTRAL atom of an element is ...
same as the number of valence electrons
same as the atomic mass
same as the number of protons
same as the number of neutrons
21
Which elements are NOT reactive at all because their outer electron orbits are filled?
Alkali Metals
Alkaline Earth Metals
Noble Gases
Transition Metals

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