Ch 11: Introduction

Balance the following:

____ Fe + ____ Cl₂ → ____ FeCl₃

• 1,1,2
• 1,3,1
• 2,2,3
• 2,3,2

Tags

NGSS.MS-PS1-5

Which type of reaction is:

3 Pb + 2 H₃PO₄ → 3 H₂ + Pb₃(PO₄)₂

• Synthesis
• Single Displacement
• Double Displacement
• Combustion

Tags

NGSS.MS-PS1-2

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

• Mg and O₂

• MgO

• Mg and MgO

• O and MgO

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-1

The blue numbers in the image represent

• subscripts

• coeffiecients

• roman numerals

• none of the answer options are correct

When balancing a chemical equation, you can only change _________, you can never change _______!

• coefficients, subscripts

• subscripts, coefficients

• formulas, subscripts

• coefficients, formula units

Tags

NGSS.MS-PS1-5

Si + S₈ --> Si₂S₄

• Synthesis (combination)
• Decomposition
• Single replacement
• Double replacement

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-1

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!
• No!

Tags

NGSS.MS-PS1-5

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

• Reactants
• Products 
• Yields 
• Chemical Equation 

Balance this equation
_Al +_HCl --> _H₂ +_AlCl₃

• 2, 6, 3, 2
• it is already balanced
• 4, 12, 3, 4
• 2, 1, 4, 5

Tags

NGSS.MS-PS1-5

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H₂ + __S --> __H₂S

• 1,1 --> 1
• 2,2 --> 2
• 1,2 --> 1
• 1,2 --> 2

Tags

NGSS.MS-PS1-5