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
Aim#13: Why is chemistry so important to biology?
Chemistry is the study of matter
What is Chemistry?
What is matter?
Matter is anything that occupies space and has mass.
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.
What are the chemical building blocks?
Elements Compounds
Atoms
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.
Who can give some examples of elements?
Gold
Sodium
Helium
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
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
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.
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.
Brain Pop: Atomshttps://www.brainpop.com/science/matterandchemistry/atoms/
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.
Atoms
PN
Nucleus (protons and neutrons)
Electrons
When atoms bond together they are called……
MOLECULES
Join
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
Meet the Elements
https://www.youtube.com/watch?v=d0zION8xjbM