Physical Science: 5.07 Unit Test: Elements

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

C

Which material is ductile?

metal

Which elements most easily give up electrons?

metals

Which processes can elements be broken down through?

nuclear processes, but not chemical

What does the atomic number represent?

number of protons in an atom

Sodium (Na) is a highly reactive metal and chlorine (Cl) is a poisonous gas. Which compound do they form when they chemically combine?

table salt

How do elements form?

through fusion in stars and supernova

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

10

Which groups highlight nonmetals?

B and D

What is the chemical formula for water, according to this illustration?

H₂O

Why is oxygen an element?

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

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

NH₃

What does the illustration, as a whole, represent?

a compound

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

are full

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

chemical formula

What is a common property of metals?

conducts electricity

Which choice represents a group of elements with common characteristics?

copper, gold, silver