Quiz 4 Review

The periodic table was initially organized by

• atomic number

• atomic weight

• chemical and physical properties

• element size

The metals sodium, lithium and potassium were group together because:

• They were all shiny

• They all reacted violently with water

• They conducted heat and electricity well

• All of the above

Mendeleev sorted the periodic table based on:

• Properties of the elements

• 
  Their correct groups

• Whether the element had been officially discovered

• None of the above

Henry Moseley discovered that:

• Elements had the different numbers of electrons.

• Elements had different numbers of protons.

• Elements had different atomic weights.

• Elements had different atomic numbers.

The elements in the modern periodic table is ordered according to:

• Atomic weight

• Chemical and physical properties

• Atomic number

• Group

The non-metals can mostly be found in the following groups of the periodic table:

• Groups 1 and 2

• Groups 13-17 and 18

• Groups 3-12

• Group 18

Metalloids can be defined as:

• Elements which possess the properties of both metals and non-metals

• Elements which are very similar to metals

• Semi-conductors

• Elements which are very similar to non-metals

Which of the following is not a physical property seen in a metallic element?

• Able to be drawn into wires

• Ability to be bent into shapes

• Conducts electricity

• Having a low melting point

Non-metals...

• Accept or share electrons in a chemical reaction.

• Lose electrons in a chemical reaction

• React with acid to produce hydrogen gas

• Corrode in air or seawater.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An example of a non-metal is:

• Mercury

• Sulfur

• Silicon

• Calcium