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Date: October 6, 2015 Aim #13: Why is chemistry so important to biology? HW: 1)Worksheet-...
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Date: October 6, 2015
Aim #13: Why is chemistry so important to biology?
HW:1)Worksheet- Understanding Chemical Formulas2)Crickets Lab due Wednesday 10/73)Textbook Guided Reading 2-1 due Tuesday
10/13
Do Now: Warm-Up Notebook
Date Title of Activity Page #10/6 Self-Assessment: Intro to Chem25
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Aim#13: Why is chemistry so important to biology?
Chemistry is the study of matter
What is Chemistry?
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What is matter?
Matter is anything that occupies space and has mass.
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Why do we need to study chemistry in a biology class?
All living things are made up of matter, share the chemical building blocks, and depend on chemical processes for survival.
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What are the chemical building blocks?
Elements Compounds
Atoms
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What are elements?
An element is a pure substance that cannot be broken down into other substances by chemical means.
Periodic Table- is a list of around 100 elements that are found on earth.
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Who can give some examples of elements?
Gold
Sodium
Helium
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About 25 elements are essential to life
Oxygen (O), Carbon (C), Hydrogen (H), & Nitrogen (N)make up about 96% of theliving matter in your body
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Important Element Symbols:H (Hydrogen) Cl (Chlorine)
N (Nitrogen) Ca (Calcium)
O (Oxygen) K (Potassium)
C (Carbon) Na (Sodium)Each element is represented by a symbol made upof one or two letters.**Note: If a symbol is two letters, only the first letteris capitalized
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What are compounds?
+Cl
Salt
Compound- is a substance containing two or more elements that are chemically combined ina fixed ratio.
A compound’s properties may differ greatly fromthose of its component elements.
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What is an atom?
Atom- is the smallest possible particle of an element.
Gold
A piece of gold, is made up of only one type of atom (gold atoms).Billions of gold atoms.
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Brain Pop: Atomshttps://www.brainpop.com/science/matterandchemistry/atoms/
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What are atoms made up of?Protons- subatomic particleswith a positive electrical charge (+)
Electrons- subatomic particleswith a negative electrical charge (-)
Neutrons- subatomic particlesthat are electrically neutral.
An element’s physical and chemical properties dependon the number and arrangement of these particles.
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Atoms
PN
Nucleus (protons and neutrons)
Electrons
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When atoms bond together they are called……
MOLECULES
Join
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How do we write chemical compounds/molecules using
symbols?What is H20?
How many hydrogen atoms in 1 molecule of water? 2
How many oxygen atoms in 1 molecule of water? 1
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Meet the Elements
https://www.youtube.com/watch?v=d0zION8xjbM