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Atoms and Elements
Atoms and Elements
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Unit E Chapter 2 Test Review
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
The smallest unit of an element with all the properties of that element is . . .
molecule
neutron
atom
proton
2
Atoms are held together by the attraction between . . .
protons and the nucleus
electrons and neutrons
protons and neutrons
electrons and protons
3
Which is the formula for a molecule with 1 carbon atom, 2 hydrogen atoms and 3 oxygen atoms?
H3C2O
H2CO3
H3CO2
HC2O3
4
What is the center of an atom called?
compound
nucleus
carbon
electron
5
A subatomic particle with no charge is a . . .
nucleus
electron
neutron
proton
6
An arrangement of elements by similar properties is called . . .
compound
Periodic Table
molecule
orbital
7
An _______ is a subatomic particle with a negative charge.
element
neutron
electron
proton
8
Two or more atoms joined together are a . . .
neutron
happy marriage
molecule
element
9
A substance made up of only one kind of atom is . . .
neutron
element
molecule
proton
10
The atomic number of an element is the number of ________ in its nucleus.
electrons
protons
neutrons
atoms
11
The atomic theory states that matter is made up of ________________
earth and air
earth, air, fire and water
elements
atoms
12
Theories in science . . .
are never proven wrong
never change
are based on philosophy
are based on experimental evidence
13
A subatomic particle with a positive charge is a _____________.
nucleus
electron
proton
neutron
14
A substance made up of the atoms of two or more elements is a _____________.
halogen
compound
metal
molecule
15
In the Periodic Table, elements are arranged by atomic number and ________________.
size
similar properties
color
atomic mass
