Chemistry CFE

Which number should go in the blank?
Al(NO₃)₃ + _  NaOH -> Al(OH)₃ + 3 NaNO₃

• 1

• 2

• 3

• 0

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many Iron (Fe) atoms are in this chemical formula?

• 2 iron atoms

• 6 iron atoms

• 5 iron atoms

• 4 iron atoms

Tags

NGSS.MS-PS1-1

What does a represent?

• Proton

• Neutron

• Electron

Tags

NGSS.MS-PS1-1

What is the atomic mass of this element?

• 20

• 60

• 40

• 41

Tags

NGSS.MS-PS1-1

Which particle contributes the negative charge to the atom?

• proton

• electron

• neutron

• nucleus

Gold is an example of a(n) 

• pure element

• pure compound

• pure mixture

protons

• negative charge, nucleus

• positive charge, shells

• positive charge , nucleus

• neutral charge, nucleus

Tags

NGSS.MS-PS1-1

electrons

• no charge, nucleus

• positive charge, nucleus

• negative charge, shells

• negative charge, nucleus

Tags

NGSS.MS-PS2-3

The characteristics or properties of metals include

• shiny and solid

• ductile and malleable

• lose electrons

• all of the above

A molecule is

• a singular particle of a particular element

• another name for an element

• 2 or more atoms that are combined

Tags

NGSS.MS-PS1-1