Criss-cross method

A __________ uses chemical symbols to represent the atoms of the elements and their ratios in a chemical compound.

• subscript
• coefficient
• chemical formula
• compound

Is Iron (Fe) an element or a compound?

• Element
• Compound

An attraction that holds oppositely charged ions close together.

• Ionic Bond
• Covalent Bond
• Chemical Bond
• Physical Bond

An atom that loses electrons in an ionic bond becomes a ________ charged ion.

• Negatively
• Positively

An atom that gains an electron in an ionic bond becomes a/an _______________ charged ion.

• Negatively
• Positively

Ba ⁺³ and  Cl^-

• Ba₃Cl
• Ba₃Cl₃
• BaCl₃
• BaCl

Tags

NGSS.MS-PS1-1

Fe ⁺³  and  S ^-2

• Fe₃S₂
• FeS
• S₃Fe₂
• Fe₂S₃

Tags

NGSS.MS-PS1-1

Ag ⁺  and  Br ^-

• AgBr
• BrAg
• Ag₂Br₂
• Br₂Ag₂

Tags

NGSS.MS-PS1-1

Ag ⁺  and  Br ^-

• AgBr
• BrAg
• Ag₂Br₂
• Br₂Ag₂

Tags

NGSS.HS-PS1-2

How do the following two elements bond together?
Calcium and Oxygen     

• CaO
• Ca₃O₂
• Ca₂O₃
• CaO₂

Tags

NGSS.HS-PS1-2