mS cURT & I LESSON TYPES AND bALANCE

Multiple Choice

What is the Law of Conservation of Mass?

• It states that matter cannot be created or destroyed.

• It states that energy cannot be created or destroyed.

• It states that matter can be created or destroyed.

• It states that sound can be created or destroyed.

Multiple Choice

What is a coefficient?

• The small number on the right of the chemical symbol.
• The large number in front of a chemical formula.
• The number in between the chemical symbols.
• The number behind a chemical formula.

Multiple Choice

What is the part of the chemical equation in green called? 
Fe + S --> FeS

• products
• reactants
• yield
• chemical formula

Multiple Choice

What is the little number after an element in a chemical equation called.
Example: H₂

• Coefficient 
• Subscript
• Atom
• Equation

Multiple Select

choose all answers is aligned wit/ matches up wit

An equation that follow the Law of Conservation of Mass

• this amount of stuff-es-es on the R side is the same as the P side

• Pusha P due the product times the dividends

• the law of conservation on energy has

• h2o is Hydrogen and oxygen plus sum mo hydrogen

• matter cannot be created nor destroyed on either side of the equation

Multiple Choice

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO 

• 1
• 2
• 3
• 4

Draw

1] BALANCE THE EQUATION FINISH THE INVENTORY. SLASH OUT OLD INVENTORY AS YOU CHANGE COEFFICIENTS.

Fill in the Blank

IN 10 SECS SPELL THE REACTION WHERE 2 THINGS ARE COMBINED TO MAKE SOMETHING NEW.

_________ REACTION

Multiple Choice

18+5 = ___+9

• 23

• 32

• 14

• 9

Multiple Choice

26-8 = ___-2

• 24

• 18

• 20

• 16

Multiple Choice

Name the part in red:

_2_H₂ + _1_O₂ -> _2_H₂O

• Coefficient
• Product
• Yield
• Subscript

Multiple Choice

How many phosphorus atoms are in PO₄?

• 1
• 2
• 3
• 4

Multiple Choice

Which number should go in the blank?
_ H₂ + O₂ -> 2 H₂O

• 1
• 2
• 3
• 0

Multiple Choice

Is the following equation balanced or unbalanced ? 
Al + O₂ --> Al₂O₃

• Balanced
• Unbalanced

Multiple Choice

Is the following equation balanced or unbalanced ? 
N₂ +3 H₂ --> 2NH₃

• Balanced
• Unbalanced

Multiple Choice

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2
• 6
• 1
• 4

Multiple Choice

What are the coefficient used to balance the equation below?
__Ag₂O →__ Ag +___O₂

• 2,4,1
• 1,1,1
• 2,1,2
• 2,2,2

Multiple Choice

4Si   + S₈   -->   2Si₂S₄

• Synthesis
• Decomposition
• Single Displacement
• Double Displacement

Multiple Choice

2Pb(NO₃)₂   -->   2PbO +  4NO₂  +  O₂

• Synthesis
• Decomposition
• Single Displacement
• Combustion

Multiple Choice

The following is what type of reaction:
PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

Multiple Choice

The following is what type of reaction:
NH₃ + HCl  → NH₄Cl

• Synthesis
• Decomposition
• Single Replacement Replacement
• Double Replacement Replacement

Multiple Choice

3Ca + 2AlCl₃ --> 3CaCl₂ + 2Al

• Synthesis
• Decomposition
• Single Displacement
• Double Displacement

Multiple Choice

4Si   + S₈   -->   2Si₂S₄

• Synthesis
• Decomposition
• Single Displacement
• Double Displacement

Multiple Choice

C₄H₁₂ + O₂ → CO₂ + H₂O

• Synthesis
• Combustion
• Single Replacement
• Double Replacement

Multiple Choice

3KOH + H₃PO₄ --> K₃PO₄ + 3H₂O

• Synthesis 
• Decomposition
• Single displacement
• Double displacement

Multiple Choice

What reaction has the following general formula:

AB --> A + B

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

Multiple Choice

Which chemical reaction takes place when 2 substances react to form a single product?

• Decomposition
• Double Replacement
• Single Replacement
• Synthesis

Multiple Choice

NH₃ + HCl ---> NH₄Cl 

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

Multiple Choice

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled
• the product is half the mass of the reactants
• the mass is the same
• the mass changes depending on the reaction

Multiple Choice

Identify the type of chemical reaction

• Synthesis

• Decomposition

• Single replacement

• Double replacement

• Combustion

Multiple Choice

Identify the type of chemical reaction

• Synthesis

• Decomposition

• Single replacement

• Double replacement

• Combustion

Multiple Choice

An oreo cookie has a mass of 20 grams. It gets crushed into crumbs for a recipe. What is the mass of the crumbs?

• 15 grams

• 25 grams

• 20 grams

Multiple Choice

If there are 4 H atoms on the reactant side, how many H atoms will be on the product side? 

• 2
• 4
• 6
• You need more information to answer this question

Draw

balance equation showing updated inventory and coefficients.