Balancing and Typing Reactions

What is the left part of a chemical equation called...
H_{2 +} O --> H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Is this balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!
• NO!

Tags

NGSS.MS-PS1-5

In the equation,          2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O
• MgO
• Mg and MgO
• O and MgO

Tags

NGSS.MS-PS1-2

Balance this equation:
 2Li + Cl₂ -> LiCl

• 2Li + Cl₂ -> 4LiCl2
• 2Li + Cl₂ -> LiCl₂
• 2Li + Cl₂ -> 2LiCl

Tags

NGSS.MS-PS1-5

Read the following chemical formula: C₆H₁₂O₆. How many hydrogen atoms are in the formula?

• 12
• 6
• 4

Tags

NGSS.MS-PS1-1

The substances on the left of the yields arrow that start a chemical reaction are called _____.

• reactants
• products
• reactors
• ingredients

The substances on the right side of the yields arrow that are produced in a chemical reaction are called _____.

• reactants
• products
• reactors
• ingredients

Tags

NGSS.MS-PS1-5

Chemical equations must be balanced because they describe how chemical reactions obey the principle of __________. 

• activation
• decomposition
• mass coefficients
• conservation of mass

Tags

NGSS.MS-PS1-5

The red numbers in the image below represent ________

• subscripts
• coefficients
• I don't know, and don't want to try
• None of the answers are correct

Tags

NGSS.MS-PS1-1

The blue numbers in the image below represent ________

• I don't know, and don't want to try
• coefficients
• subscripts
• none of the answers are correct

Tags

NGSS.MS-PS1-1