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Matter Review Section 1 Polydoras Flashcards | StudBud
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Matter Review Section 1 Polydoras
Matter Review Section 1 Polydoras
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Periodic table review and atoms, elements, molecules and compounds. 7th grade
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
The smallest unit of a
substance
molecule
atom
element
compound
2
The smallest unit of an element that still keeps the properties of that element.
atom
element
compound
molecule
3
What do elements in the same group have in common?
Total electron number
Same number of Neutrons
Same number of Protons
valence electron number
4
What element is in group 6, period 4
Phosphorus
Selenium
Lithium
Zinc
5
Argon is part of what family of elements?
Alkali Earth Metals
Halogens
Noble Gases
Alkali Metals
6
Rows are also known as what on the periodic table?
elements
groups
families
periods
7
How many electrons can the second electron shell hold?
6
2
8
4
8
Water (H
2
O)
Molecule
Both C and M
Compound
Neither C or M
9
Ammonia (NH
3
) is made of how many elements? How many atoms?
4 elements, 2 atoms
1 element, 4 atoms
2 elements, 4 atoms
2 elements, 3 atoms
10
How is the periodic table organized?
By element symbol
By atomic number
By the number of neutrons
By atomic mass
11
True or False: Electrons are in the nucleus of an atom?
False
True
12
The left side of the periodic table has what big group of elements?
radioactive elements
nonmetals
metals
metalloids
13
Which element is atomic number 10?
Carbon
Neon
Sodium
Oxygen
14
The atomic number represents the number of which particles in an atom?
protons and neutrons
protons and electrons
protons and molecules
protons and valence electrons
15
What particles of an atom have a positive charge?
neutrons
electrons
protons
16
What element is in group 3, period 5
Oxygen
Calcium
Indium
Titanium
17
The particle responsible for chemical bonding in an atom.
protons
electrons
neutrons
valence electrons
18
How many valence electrons does Sodium have?
4
3
1
2
19
A substance that is made of only one kind of atom; pure
element
molecule
compound
atom
20
How many atoms of Chlorine are in the following compound: CCl
4
2
3
4
1
