Which of the following represents a valid hypothesis?
A) Argon does not react with oxygen.
B) Sodium metal reacts violently with water.
C) Lead is soft and malleable.
D) Nitrogen is a gas at room temperature.
E) Metals tend to lose electrons.
Correct Answer:
Verified
Q44: Identify the longest length.
A) 3.10 ft
B) 37.0
Q45: Choose the pure substance from the list
Q46: Choose the pure substance from the list
Q47: Identify a gas.
A) silver
B) mercury
C) hydrogen
D) iron
E)
Q48: If the walls in a room are
Q50: Water is an example of
A) a compound.
B)
Q51: Give the composition of hydrogen peroxide.
A) two
Q53: Identify a solid.
A) gold
B) helium
C) water
D) neon
E)
Q54: Identify the crystalline solid.
A) plastic
B) cloth
C) diamond
D)
Q96: A banana split is an example of
A)a
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