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© 2014 wheresjenny.com Chemicals- modern demons? CHEMICALS – MODERN DEMONS ?
© 2014 wheresjenny.com Chemicals- modern demons? What Is a Chemical? Short answer : Everything is a chemical. Longer answer : Chemistry is the study of matter and its interactions with other matter. Anything made of matter is therefore a chemical. Any liquid, solid, gas. Any pure substance; any mixture. Water is a chemical. Technically speaking, so is a chunk of your computer. A chemical can often be broken down into components, as is true with your computer. However, people generally use the term 'chemical' to refer to a substance that appears homogeneous or the same throughout its structure.
© 2014 wheresjenny.com Chemicals- modern demons? Vocabulary Plasma : The colorless fluid part of blood, lymph, or milk, in which corpuscles or fat globules are suspended. Photosynthesis : The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product. Aerobic Cellular Respiration : Aerobic cellular respiration is the process in which our cells break down food and turn it into energy that cells need to perform their life functions. Anaerobic Respiration : A form of cellular respiration that occurs when oxygen is absent or scarce. Morbidity : The proportion of sickness or of a specific disease in a geographical locality. Malformation : An abnormally formed part of the body.
© 2014 wheresjenny.com Chemicals- modern demons? Matter and Chemicals Anything that has mass and occupies space is matter. Matter consists of particles. So, basically anything you can taste, smell, or hold consists of matter and is therefore a chemical. Examples of chemicals include the chemical elements, such as zinc, helium, and oxygen; compounds made from elements including water, carbon dioxide, and salt; and more complex materials like your computer, air, rain, a chicken, a car, etc.
© 2014 wheresjenny.com Chemicals- modern demons? More Examples of Chemicals Gases Liquids Solids Plasma (including most of a flame) Examples of Things That Are not Chemicals Heat Kinetic energy Gravity Potential energy Ultraviolet light
© 2014 wheresjenny.com Chemicals- modern demons? What Is a Chemical Reaction? Simply put, a chemical reaction is any transformation from one set of chemicals into another set. If the starting and ending substances are the same, a change may have occurred, but it is not a chemical reaction. Examples of Chemical Reactions There are millions of chemical reactions! Here are some examples: Fire (combustion) Baking a cake Mixing baking soda and vinegar to produce salt and carbon dioxide gas
© 2014 wheresjenny.com Chemicals- modern demons? 10 Examples of Chemical Reactions in Everyday Life 1. Photosynthesis 2. Aerobic Cellular Respiration 3. Anaerobic Respiration 4. Combustion 5. Rust 6. Mixing Chemicals 7. Batteries 8. Digestion 9. Acid-Base Reactions 10. Soaps and Detergents
© 2014 wheresjenny.com Chemicals- modern demons? Exposure to Toxic Chemicals Death Morbidity : 1) Irreversible a. Death & b. Life long disability and 2) Reversible Effects on pregnancy outcome : 1) Abortion and 2) Malformation genetic effects Effects on growing children : 1) Growth and development and 2) Behavioral changes Effects on Immune system Effects on Inheritance Cancer
© 2014 wheresjenny.com Chemicals- modern demons? Biological effects on skin Effects on nervous system and sense organs Effects on other Physiological functions
Photosynthesis and Respiration. What is photosynthesis? A chemical reaction that occurs in plants that changes light energy to chemical energy A chemical.
All organisms have the same basic needs: Food Water Air Shelter.
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12.2 Chemistry in Plants. Plants are like a chemical factory that use energy from sunlight and raw materials from air and water.
A mixture is a combination of two or more substances in which the basic identity of each substance is not changed. Unlike pure substances, mixtures do.
Unit 3 Structure and Function Notes Part 1 Its Alive or, Is It? M.Elizabeth Martin Luther King, Jr. JHS 2005.
N-6 Cellular Respiration How do we get energy from food?
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The Organization of the Human System. Homeostasis Homeostasis is the regulation of an organisms internal, life- maintaining conditions despite changes.
By: Mr. P 7 th Grade Life Science Godley Station School.
Ch. 8 Cell Structure & Function Lesson 1: What Do Cells Do?
Unit A Basic Principles of Animal Husbandry Lesson 1 Identifying Differences Between Plants and Animals 1.
Warm Up 9/19 1. Suppose you have a sample of an unknown mineral. Its mass is 50 g and it has a volume of 100 cm3. What is its density? 2. Copper has a.
1C1 Living things OB41identify the basic processes and characteristics common to all living organisms: nutrition, respiration, excretion, growth, reproduction,
A Summary of How Theories Develop in Science: – based on a series of verifiable observations & measurements. leads to a conclusion based on inductive reasoning.
Section 1—Composition of Matter CHAPTER 17:CLASSIFICATION OF MATTER.
Properties of Matter. Composition and Properties of Matter Composition of Matter what matter is made of Ex: Center of the Earth Properties of Matter what.
Ch 2 The Chemical Context of Life. I. Overview All living organisms are subject to the laws of chemistry & physics. A basic knowledge of both helps.
DESCRIBE PHYSICAL & CHEMICAL CHANGES IN TERMS OF ENDOTHERMIC & EXOTHERMIC PROCESSES COS 5.0.
CELL PROCESSES What keeps them alive? Moving Cellular Materials Cells have a _____ membrane that regulates what goes into or out of the cell. Passive.
What is Matter?. CHEMISTRY- the scientific study of the composition, structure, and properties of matter and the changes that matter undergoes MATTER-
Biology - the science of life Bio- = life-logy = the study of There is a lot of living stuff… Too many for one person to be an expert in everything.
All living organisms need to take substances from their environment to obtain energy, to grow and to stay healthy.
What is Photosynthesis? The process of photosynthesis is a chemical reaction. It is the most important chemical reaction on our planet.
Energy for Life Metabolism the total of all chemical reactions in an organism. All activities an organism performs involve chemical reactions in some way.
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