Bonding and Balancing

What is the "large" number that you CAN CHANGE in a chemical equation? 

• Subscript 
• Coefficient
• Product
• Reactant 

Tags

NGSS.MS-PS1-5

What is the small number that you CANNOT CHANGE in a chemical equation? 

• Subscript
• Coefficient
• Product
• Reactant 

What type of chemical reaction is this? 
Mg + 2HCl -----> MgCl₂ + H₂

• Synthesis
• Decomposiition
• Single Replacement
• Double Replacement

What type of reaction is this? 
H₂O₂ -------> H₂O + O₂

• Synthesis
• Decomposition
• Combustion
• Single Replacement 

Tags

NGSS.MS-PS1-5

What type of reaction is this one? 
AB + CD ------->  AD + CB
OR
AB + CD ------>  AC + BD

• Combustion
• Double Replacement
• Single Replacement
• Decomposition 

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What are the products in this equation? 
Mg + 2HCl ---->  MgCl₂  + H₂

• Mg + 2HCl 
• 2HCl and MgCl₂
•  MgCl₂ + H₂
• H₂ and Mg

Tags

NGSS.MS-PS1-5

Which is most likely to form a negative ion?

• an element from group 17

• a metal

• an element from group 1

• an element with atoms that have eight valence electrons

Which of the following is the correct name for MgCl₂?

• magnesium chlorine

• magnesium dichlorine

• magnesium chloride

• magnesium dichloride

Tags

NGSS.MS-PS1-1

When an atom loses a valence electron, it becomes a(n) _____________ ion.

• positive
• negative
• neutral
• polyatomic

If an aluminum atom has 13 protons (+) and 10 electrons (-), what is it's charge?

• Al³⁺

• Al¹³⁺

• Al¹⁰⁺

• Al^10-