Poole ERQ #4

Particles of matter that make up protons and neutrons are _____.

• electrons

• isotopes

• atoms

• quarks

Horizontal rows of the periodic table are called _____.

• groups

• families

• clusters

• periods

Atoms of the same element with different numbers of neutrons are called _____.

• metalloids

• transition elements

• radioactive

• isotopes

A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is _____.

• 676

• 780

• 0.56

• 56

At room temperature, most metals are _____.

• solids

• liquids

• gasses

• stable

A term that means “salt former” is _____.

• saltus formerus

• crystalis

• halogen

• sodium formers

Metals can be used to make wire because they are _____.

a. ductile b. malleable c. bendable d. brittle

• ductile

• malleable

• bendable

• brittle

Two isotopes of carbon are carbon-12 and carbon-14. These isotopes differ from one another atomically by two _____.

• electrons

• carbons

• neutrons

• protons

The appearance of “most” solid metals can be described as _____.

• powdery

• glassy

• dull

• shiny

Elements that lie along the “stair-step line” of the periodic table are

________.

• liquids

• metalloids

• metals

• radioactive