Chemical Equation Practice Quiz

When balancing this equation, Fe + Cl₂ → FeCl₃, the correct coefficient for Cl₂?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Balance this equation, CaCO₃(s) → CaO(s) + CO₂(g)?

• 3,1,2

• 1,1,1

• 1,3,1

• 2,6,3

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Fill in the blanks with coefficient:
PCl₅+_ H₂O→_ HCl+H₃PO₄

• 4, 5
• 1, 6
• 3, 8
• 2,2

Tags

NGSS.MS-PS1-5

Balance this equation
_Zn+_HCl-->_ZnCl₂ +_H₂

• 1,1,2,1
• 1,1,1,2
• 1,2,1,1
• 2,1,1,1

Tags

NGSS.MS-PS1-5

Name the part in red:

H₂ + O₂ -> H₂O

• Coefficient
• Product
• Yield
• Subscript

Balance this equation:

H₂ + Cl₂ ---> HCl

• It is balanced.

• H₂ + Cl₂ ---> 2HCl

• 3H₂ + Cl₂ ---> 6HCl

• H₂ + 3Cl₂ ---> 6HCl

Tags

NGSS.MS-PS1-5

Which one is an element?

• Co
• CO
• CO₂
• CO₃^-2

a number in front of a chemical formula that indicates how many molecules or compounds of each reactant and product are involved in a reaction

• denominator

• coefficient

• numerator

• subscript

Suppose you have 15g of baking soda and mix it with 15g of vinegar. When they are combined they bubble and fizz a lot. The final solution has a mass of 25g. What happened to the "lost" 5g?

• it dissappears

• it is still there just not weighted

• it is in the gas that is formed

• nothing happened

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If reaction starts with 20g of reactants it should produce 

• a total of 40g of products
• a total of 10g of products
• a total of 80 g of products
• a total of 20g of products

Tags

NGSS.MS-PS1-5