Grade 7 Class Room 27 at 104 W. Dorothy Lane, Kettering, OH 45429 US - Chapter 4/5 Review Sheet
Chapter 4:
Vocab: ion, ionic bond, polyatomic ion, crystal lattice, covalent bond, double bond, molecular compound, polar, nonpolar
Section 1:
How are ions formed?
Why do ions alternate in a crystal lattice formation?
What are some characteristics of ionic compounds?
Section 2:
How are covalent bonds formed?
How are triple, double, and single bonds different?
What is the difference between polar and nonpolar bonds?
What are some characteristics of molecular compounds?
Chapter 5:
Vocabulary:
Precipitate, endothermic reaction, exothermic reaction, activation energy, concentration, catalyst, enzyme, inhibitor
5-1: Observing Chemical Reactions
- What are some signs that a chemical reaction is occurring?
- What happens to chemical bonds during a chemical reaction?
- Chemical reactions only occur when the products (ending materials) are different than the reactants (beginning materials)
- What is the difference between an exothermic and an endothermic reaction?
5-3: Controlling Chemical Equations
- What is activation energy?
- Be able to look at an energy diagram to determine if a reaction is exothermic or endothermic (see notes from 5-1 also). Label an energy diagram with activation energy, energy of reactants, energy of products, and energy released or absorbed
- How can you speed up a reaction? Why does each of these methods make the reaction go faster?
- How can you slow down a reaction? Why does this work?
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