Science Chapter 4 Lesson 4

30 terms by paulinahh 

Create a new folder

Advertisement Upgrade to remove ads

Composed of closely packed, positively charged metals ions that are surrounded by freely moving valence electrons.

metal crystal

A metal crystal is composed of closely packed, positively charged metal ions that are surrounded by freely moving ...

valence electrons

A metal crystal is composed of closely packed, .......... charged metal ions that are surrounded by freely moving ...

positively

The attraction between positive ions and electrons

metallic bond

The attraction between positive metal ions and surrounding electrons

metallic bond

Metal atoms lose electrons easily because ...

their valence electrons are held weakly

Nonmetal atoms gain electrons easily because ...

their valence electrons are held strongly

Metal atoms are likely to form metallic bonds because ...

their valence electrons are held weakly

Nonmetals are not likely to form metallic bonds because ...

their valence electrons are held strongly

What are the properties of metals?

shiny luster, malleable, ductile, electrical & thermal conductivity

Which elements have shiny luster, are malleable, ductile, and have electrical & thermal conductivity

metals

The properties of solid metals can be explained by ...

the structure of metal atoms and the bonding among the atoms

The luster of a metal is due to its ...

valence electrons

Metals are ..... because they can be bent easily and pulled into thin strands or wires.

ductile

Metals are ... because they can be rolled into thin sheets or beaten into complex shapes.

malleable

Solid metals are good conductors of ...

heat & electricity

The transfer of thermal energy is known as ...

heat

Metals are good conductors of heat because the ....... within a metal are free to move.

valence electrons

Metals usually have .... melting points.

high

Metals can be used to form the fender of a motorcycle because they are ...

malleable

When the metal parts of a motorcycle are polished, they have ...

shiny luster

Metals cool a motorcycle because they have ...

high thermal conductivity

Metals are used in electrical wires because they have ...

high electrical conductivity

Most metals are .... at room temperature?

solid

A mixture made of two or more elements, at least one of which is a metal

alloy

Most of the metallic objects you see and use are made of ...

alloys

How are alloys different than pure metals?

They are stronger and less reactive.

Why are alloys used to make most of the metallic objects that you see?

They are stronger and less reactive than pure metals.

What is harder than pure gold but still retains its beauty and shine?

gold alloy

Iron is often alloyed with one or more other elements to make ......, which is stronger and does not rust.

steel

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set