Which cannot be broken down chemically or physically into a simpler substance?
A) Sugar
B) Salt
C) Seawater
D) Copper
Correct Answer:
Verified
Q73: Which is a transition element?
A)Magnesium
B)Potassium
C)Manganese
D)Silicon
Q74: Which chemical symbol is properly written?
A)CA
B)Cu
C)CO
D)CL
Q75: Which element is most similar to bromine?
A)Chlorine
B)Radium
C)Cesium
D)Zinc
Q76: What is the atomic number of selenium?
A)34
B)16
C)14
D)38
Q77: Which is a halogen?
A)Chlorine
B)Helium
C)Potassium
D)Calcium
Q79: How many hydrogen atoms are in the
Q80: What is the atomic number of potassium?
A)15
B)19
C)46
D)50
Q81: More substances exist as compounds than as
Q82: Homogeneous mixtures of metals are called:
A)ions
B)alloys
C)anions
D)compounds
Q83: All gases exist as diatomic molecules.
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