Unit 6 - Chemistry

This symbol is used to separate multiple reactants or products.

• +
• -->

• delta

• Cat.

Which of the following is NOT an indicator of a chemical reaction?

• Bubbles

• Heat

• Size change

• Precipitate

Law of conservation of ________ states that nothing can be created or destroyed.

• matter

• balancing

• nomenclature

• energy

The numbers found in front of a chemical compound in a reaction.

• Coefficients

• subscripts

• superscripts

• numbers

________ are found to the left of the arrow in a chemical reaction.

• Reactants

• Products

• Catalysts

________ are found to the right of the arrow in a chemical reaction.

• Products

• Reactants

• Catalysts

Which of the following physical states is aqueous

• s

• l

• g

• aq

Lambda is a symbol used to indicate:

• light

• heat

• sound

What is the coefficient in front of NaCl when this is balanced:

NaCl + MgBr₂ --> MgCl₂ + NaBr

• 2

• 1

• 0

• 3

What is the coefficient in front of O₂ when the following is balanced:

C₂H₆ + O₂ --> CO₂ + H₂O

• 7

• 3.5

• 3

• 8