Chemistry

Unit 2 Lesson 3:  Panic Attack  Lesson objectives: 1) Panic attacks 2) Suggest possible ways to handle panic attacks Panic Attack: Panic attacks different from anxiety.  These appear and disappear quickly. Symptoms: a. suffocation, chest pains, feelings that the person is facing a heart attack b. difficulty in breathing, quick heartbeats How can people avoid panic attacks? a. Drink less caffeine b. Practice yoga c. Relax muscles and shoulders d. Slow your breathing e. Speak to yourself and ensure that you are in control.  I’m ok. I’m in control. f. Always keep a paper bag to use in case of hyperventilation Medical help is required if panic attacks are repeated regularly.

What are R eversible Reactions? R eversible Reaction: R eversible reaction  is a reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously. Reversible Reaction  can be broken into two reactions. The symbol ⇌ has two half arrowheads, one pointing in each direction. It is used in equations that show  reversible reactions.

Unit: 2 Lesson 2: Feelings of Anxiety  Lesson objectives: 1) Identify the characteristics of anxiety 2) Identify the causes for certain types of anxieties 3) Avoiding/managing certain anxieties Anxiety: Anxiety as a feeling of fear or tenseness. Feelings that are directly linked with anxiety. a. Worried b. Unable to sleep c. Easily irritated d. Concentration becomes difficult e. Feeling detached from the environment Physical symptoms:   a. Headaches  b. Chest pains c. Fast heart beats d. Dry mouth e. Fast breathing  When do you face anxiety the most?  Answer:  During the period of exams.  This is called a performance or test anxiety.  What might lead a student to have such a feeling?  Answer:  a. Worried of the effects b. Worried that your test wouldn’t be perfect c. Knowing that you didn’t prepare enough d. Worried of your parents’ reactions in case you flunk e. The anticipation of stress causes the body to release adrenaline which lead...

What are Enzymes? Enzymes: All plants and animals, including ourselves, depend on enzymes to stay alive. Enzymes are biological catalysts. An enzyme is a large protein molecule. Enzymes help reactions take place at the quite low temperatures inside living things.

How to Balancing Chemical Equations? Define State Symbols. The number of atoms on either side of the equation must be equal. Remember that no new atoms can be made or destroyed in a chemical reaction. mass of reactants = mass of products Define State Symbols:

How many Types of Asexual Reproduction? Define Splitting/Binary Fission, Budding,  Vegetative Propagation and  Runners. There are several methods of asexual reproduction. They all produce genetic copies of the parent organism. Splitting: Most unicellular protists and bacteria reproduce simply by splitting into two cells. Some bacteria can divide into two new organisms every 10-20 minutes. Budding: During budding, a small part of the parent's body grows into a tiny and complete version of the parent. Some organisms, such as cnidarians, sponges, and some fungi, can reproduce through budding.  Other Forms of Asexual Reproduction in Animals: Some species of fish, insects, frogs, and lizards go through asexual reproduction in a different way. The females of these animals produce eggs. Normally these eggs would be fertilized by male sex cells, but in some cases, fertilization never takes place. The eggs just develop into a new animal without fertilization. For example, when que...

What is a Catalysts How catalyst work?  Define Activation Energy. Catalysts: Any substance that increases the rate of a reaction without itself being consumed. A catalyst is a substance which speeds up a chemical reaction. At the end of the reaction, the catalyst is chemically unchanged. How catalyst work? Before reactants can turn into products, need enough energy to start off the reaction. Sometimes particles with low energy can collide, but not react. A catalyst lowers the activation energy. Activation Energy: The minimum energy needed to start a reaction is called its activation energy.