Simple Balanced Chemical Equations

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

What is the right part of a chemical equation called...
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

Tags

NGSS.MS-PS1-5

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3
• 6
• 12
• 24

Tags

NGSS.MS-PS1-1

How many Aluminum are in Al₂O₃?

• 3
• 2
• 5

Tags

NGSS.MS-PS1-1

Magnesium can be burned in air to produce solid magnesium oxide.

• 2Mg(s) + O₂(g)→ 2MgO(s)
• Mg(s) + O(g) → MgO(s)
• 2Mg(s) + CO₂(g) → 2MgO(s) + C(s)
• 2Mg(s) + O₂(g) → Mg₂O₂(s)

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Sodium reacts with chlorine to produce sodium chloride.

• NaCl(s) → Cl(g) + Na(s)
• Na(s) + CO₂(g) → NaCO₂(s)
• 2Na(s) + Cl₂(g) → 2NaCl(s)
• Na(s) + Cl(g) → NaCl

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Iron reacts with sulfur to produce iron(II) sulfide powder.

• 2Fe(s) + S(s) → Fe₂S(s)
• Fe(s) + S(s) → FeS(s)
• Fe(s) + S(g) → FeS(s)
• 4Fe(s) + S₂(g) → 2Fe₂S

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

When hydrogen reacts with sulfur, a smelly gas is produced:

• H₂(g) + 2S(s) → 2HS
• H₂(g) + S(s) → H₂S(g)
• H(g) + S(s) → HS(g)
• 2H(g) + S(s) → H₂S(g)

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Predict the products for the decomposition of calcium carbonate: CaCO₃

• CaO + CO₂

• Ca + CO₃

• CaCO₂ + O₂

• CaO + CO₃

Tags

NGSS.HS-PS1-7

Write a complete balanced reaction for the following.
Calcium metal reacts with oxygen gas to form a solid

• 2 Ca (s) + O₂ (g) --> 2 CaO (s)
• 2 Ca (s) + 2 O (g) --> 2 CaO (s)
• Ca (s) + O₂ (g) --> 2 CaO (s)
• Ca (s) + O₂ (g) -->  CaO₂ (s)

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2