5.07 Unit Test Elements

Question: How many protons are in the nucleus of one atom of neon based on this information found in the Periodic Table?

10

Ne

Neon

20.18

Answer: 10

Question: Why is oxygen an element?

Answer: It cannot be broken down into a simpler substance through chemical means.

Question: How do elements form?

Answer: through fusion in stars and supernova

Question: What is the expression of the chemical composition of a compound?

Answer: chemical formula

Question: What is the chemical formula for ammonia, according to this illustration?

Answer: NH₃

Question: What is a common property of metals?

Answer: conducts electricity

Question: Which choice represents a group of elements with common characteristics?

Answer: copper, gold, silver

Question: Which elements most easily give up electrons?

Answer: metals

Question: What best describes the outer shell of the atoms in Group D on this illustration of the Periodic Table?

Answer: are full

Question: Which group highlights metalloids in the illustration of the Periodic Table?

Answer: C

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