The 'Unit 2 Practice Test' assesses understanding of molecular structures, focusing on chemical bonds, molecules, and atom groupings. It's designed to enhance knowledge in Chemistry, targeting key concepts essential for academic progression in science.
Single Atom
Molecule
Compound
Element
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Single Atom
Molecule
Compound
Element
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Single atoms
Molecule
Compound
Element
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Single atom
Molecule
Compound
Element
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A group of atoms bonded together
A group of atoms that are close to each other
Atoms that are in the same space
Atoms that are the same type
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HO2
2HO
H2o2
H2O2
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A type of Lego
The building block of matter
A season between summer and fall
A type of cell
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Either fire, air, wind, or water
Part of an atom
The smallest part of an atom
A type of atom
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Solid
Liquid
Gas
Plasma
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Solid
Liquid
Gas
Plasma
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Solid
Liquid
Gas
Plasma
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Solid
Liquid
Gas
Plasma
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Solid
Liquid
Gas
Plasma
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Solid
Liquid
Gas
None of the above
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Solid
Liquid
Gas
None of the above
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They move more quickly
They move more slowly
They move at the same pace
They stop moving
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Melting
Phase state
State change
Phase change
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Melting
Condensation
Sublimation
Evaporation
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Boiling
Melting
Freezing
Deposition
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Freezing
Condensation
Sublimation
Deposition
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Melting
Evaporation
Condensation
Freezing
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Evaporation
Condensation
Freezing
Sublimation
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Freezing
Condensation
Deposition
Melting
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Melting
Condensation
Freezing
Sublimation
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Move past each other
Vibrate
Switch places with each other
None of the above. Atoms in a solid are perfectly still.
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True
False
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The beginning of a chemical reaction
The end of a chemical reaction
The substances that are present at the beginning of a reaction
The substances that are made by the chemical reaction
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The end of a chemical reaction
The substances that are present at the end of a chemical reaction
The substances at the beginning of a chemical reaction
What you use to hold a chemical reaction
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Temperature increases
Temperature decreases
Temperature can either increase or decrease
Temperature (remains constant) stays the same
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Energy is released
Energy is absorbed
Chemical bonds are broken and/or formed
New substances are formed
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Energy is absorbed
Energy is released
Chemical bonds are broken and/or formed
Some atoms are destroyed
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OH+
H2O
NH3
NH4+
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OH+
H2O
NH3
NH4+
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Temperature decreases
Temperature increases
Temperature both increases or decreases
Temperature is constant (stays the same)
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Yes, because chemical bonds have been broken and/or formed
No, because chemical bonds have been broken and/or formed
Yes, because chemical bonds have NOT been broken and/or formed
No, because chemical bonds have NOT been broken and/or formed
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The substances in the reactants are different from the ones in the products
Because no new atoms have been formed
It says that chemical bonds have been broken and/or formed
The arrow means that a reaction happened
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Option 1
Option 2
Option 3
Option 4
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Yes, because chemical bonds have been broken and/or formed
No, because chemical bonds have been broken and/or formed
Yes, because chemical bonds have NOT been broken and/or formed
No, because chemical bonds have NOT been broken and/or formed
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754 g
324 Kg
324 g
162 g
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Because no atoms were created in this reaction
Because no atoms were destroyed in this reaction
Because some of the atoms escaped
Because the scale stayed the same
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Solubility
Flammability
Melting point
Boiling point
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Because physical properties are UNIQUE
Because no two substances share identical physical properties
Because all chemicals boil
Because most chemicals will have fingerprints
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If the physical properties of the products is different from those of the reactants
If there have been new substances that are formed
If you see it boil
If the mass changes
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