Physical Science - Module 5 Review

Energy

100

Combustion of propane releases heat and is an example of this type of reaction.

What is an exothermic reaction

200

Is the following chemical reaction Endothermic or exothermic?

2Cu + O₂ --> 2CuO + 315 kJ

What is a Exothermic.

300

Photosynthesis is an example of this type of reaction.

What is an endothermic reaction

400

The total energy present before and after a chemical reaction does this.

What is remains the same or is conserved.

500

This happens to energy whenever a chemical bond is formed.

What is it is released.

Vocabulary

100

An amount of a substance that contains approximately 6.02 x 10²³ particles.

What is a mole

200

A covalently bonded group of atoms that has a positive or negative charge and acts as a unit.

What are polyatomic Ions

300

Compounds made of only 2 elements

What are Binary Compounds

400

The number that is placed in front of reactants or products to balance the chemical reaction.

What are coefficients.

500

These symbols are found on the left side of a chemical equation.

What is a reactant.

Types of reactions

100

These reactions have 2 reactants that bond to form 1 product.

What is a Synthesis reaction.

200

This reaction ALWAYS has O2 as a reactant.

What is a combustion reaction.

300

This chemical reaction absorbs energy from its surroundings

What is an Endothermic reaction.

400

This reaction is sometimes called an ionic reaction because it involves two ions switching places during the reaction.

What is a double displacement reaction.

500

This type of reaction involves a cation bonds with the anion of a compound.

What is a single displacement reaction.

Balancing Equations

100

You are never allowed to adjust these numbers when balancing equations.

What are subscripts.

200

The mass of the reactants will always be equal to this.

What is the mass of the products.

300

Beryllium (Be), and Chlorine (Cl) form a binary ionic compound with a 1:2 ratio of Beryllium to Chloride.  What is the formula for the formula of the resulting compound?

BeCl₂

400

Butane burns with the balanced chemical equation:

2C₄H₁₀ + O₂ -->  10H₂O + 8CO₂

If 2 moles of butane are burned, how many moles of water are produced?

10

500

Balance the following single replacement reaction by replacing the ? in the product compounds:

Zn + 2HCl  -->  Zn_?Cl_? + H_?

ZnCl₂ + H₂

Misc

100

The symbol used to represent yield.

What is an arrow.

200

A chemical reaction speeds up when this is added to the reaction.

What is heat.

300

The energy source of photosynthesis.

What is light or the sun.

400

These two types of reactions are opposites of one another.

What are synthesis and decomposition reactions.

500

The two products produced during a combustion reaction involving a hydrocarbon reacting with oxygen.

What are carbon dioxide and water.