Chem Quiz 2

Groups are ------- columns on the periodic table, whereas periods are horizontal rows.

• group

• vertical

• horizontal

• row

Periods or rows identify the number of ------ that elements in that row contain.

• protron

• valence electrons

• energy levels

• neutron

The electrons found on the outermost energy level of an atom are called

---

---

- electrons.

• valence

• protron

• neutron

• electron

Find Ca on the periodic table. Since it is in row four, how many energy levels does Ca (calcium) contain?

• 2

• 20

• 4

• 40

5 characteristics for nonmetals

• Luster: dull

  Crushability: brittle

  Conductivity: nonconductor

  Reaction with hydrochloric acid: no

  Reaction with copper (II) chloride: no

• Luster: shiny

  Crushability: malleable

  Conductivity: nonconductor

  Reaction with hydrochloric acid: no

  Reaction with copper (II) chloride: no

List the five chemical properties to indicate a chemical reaction has taken place.

Tags

NGSS.MS-PS1-2

What is the name of the hottest zone of the bunsen burner flame?

• Burner

• Center

• Main combustion zone

• Top flame

Tags

NGSS.MS-PS3-4

What feature of the bunsen burner allow is to produce a hotter flame than

previous laboratory burners?

• lighter

• move air flow

• Air Vent

• oxygen

What are three safety precautions before lighting the bunsen burner?