PHYSICAL/CHEMICAL PROPERTIES OF ELEMENTS

PHYSICAL/CHEMICAL PROPERTIES OF ELEMENTS

Multiple Choice

Describe this element.

• Highly reactive metal
• Highly reactive nonmetal
• Stable
• Less stable non metal

Multiple Choice

Why are halogens so reactive?

• They want to get rid of their only valance electron

• They only need one more electron

• They are non reactive, they have a full shell

Multiple Choice

When trying to identify an unknown element, a scientist determines what other elements reacts with chemically. Which property of the unknown element determines the other element it reacts with?

• The total number of neutrons in the unknown element

• The total number of particles in the nucleus of the unknown element

• The number of protons in the nucleus of the unknown element

• The number of valence electrons in the unknown element

Multiple Choice

Using the table above, what can you infer about this element?

• It is most likely a liquid metal.

• It is most likely a solid metal.

• It is a metalloid.

• It is a non-metal.

Multiple Choice

Why are valence electrons important?

• They balance out the charges from the protons.

• They are used in bonding.

• They keep the atom stable.

• They are not important to the atom.

Multiple Choice

Where can you find the Halogens on the periodic table?

• Group 1

• Group 2

• Group 17

• Groups 18

Multiple Choice

How many valence electrons do the Alkali Metals (Family 1) have?

• 1

• 2

• 10

• 8

Multiple Choice

What is special about group 18 (Noble Gases)?

• They react freely with most other elements.

• They are inert (non-reactive).

• They are conductive.

• The Noble Gases only react with metals.

Multiple Choice

´Elizabeth was examining elements and their physical properties. She described an element is her science journal as having no shine, an insulator, and  very brittle. What would this element be a metal, nonmetal, or metalloid?

• metal 
• nonmetal 
• metalloid

Multiple Choice

If a student observes a silvery solid that is malleable, good conductor, and ductile it is a...

• nonmetal 
• metal 
• metalloid

Multiple Choice

Which of the following is a physical characteristic of a metalloid?

• texture

• malleable

• brittle

• semi-conductor

Multiple Choice

Which of the following is a physical characteristic of a metalloid?

• texture

• malleable

• brittle

• semi-conductor

Multiple Choice

How many valence electrons makes most atoms stable (nonreactive)?

• 2

• 8

• 1

• 4

Multiple Choice

An atom has 18 protons and 8 valence electrons. Which statement would best identify this element?

• The element is "happy" or stable because its outer energy level is filled.

• The element has an atomic mass of 18.

• The element is highly reactive with eight electrons in its outer shell.

• The element is a metal.

Multiple Choice

An atom has 18 protons and 8 valence electrons. Which statement would best identify this element?

• The element is "happy" or stable because its outer energy level is filled.

• The element has an atomic mass of 18.

• The element is highly reactive with eight electrons in its outer shell.

• The element is a metal.