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Chemistry Review Unit 3, Lesson 1
© 2007, CSCOPE Elements 90 occur naturally 25 essential to living organisms C,H,O,N make up 96% of a human body C HOPKINS CaFe Mighty Salt (Mg NaCl)
© 2007, CSCOPE Periodic Table Atomic Number (number of protons) Atomic Mass (total of protons and neutrons) Isotopes – different number of neutrons
© 2007, CSCOPE Atoms Nucleus –Protons (positive charge) –Neutrons (no charge) Energy levels –Electrons (negative charge)
© 2007, CSCOPE Atoms continued –Number of proton and electrons are equal –Atoms have no electrical charge
© 2007, CSCOPE Compounds Molecule –covalent bond –bond is strong Ionic Compound –ionic bond –bond is weak
© 2007, CSCOPE Solutions and Suspensions Mixture - Individual substances retain own properties Suspension – mixture in which materials do not dissolve Solution - substances evenly distributed –Solute (substance dissolved) –Solvent (substance in which solute is dissolved)
© 2007, CSCOPE Acids and Bases pH 0-14 Acids –less than 7 pH –High concentration of hydrogen ions (H+) Bases –greater than 7 pH –Low concentration of hydrogen ions (H+) pH of 7 is neutral (water)
© 2007, CSCOPE Water Polar compound Hydrogen bonding Cohesion Adhesion Capillary action Universal solvent –carries nutrients –removes wastes Most abundant substance in body Needed for digestion Regulates temperature
© 2007, CSCOPE Chemical Reactions Reactants– Before reaction Products– After reaction Catalyst– Helps energize reaction Metabolism– Maintain life C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + energy 6CO 2 + 6H 2 O + energy C 6 H 12 O 6 + 6O 2 Ex: Cellular Respiration & Photosynthesis
Chemistry of Life.
A short quiz on Basic Chemistry Make sure you read all the questions carefully!
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Chemical Basis of Life. Chemistry Matter is made up of separate chemical components. –Chemistry = Interactions between atoms/molecules. Biological function.
Chemical Basis of Life Chapter 2. Chemistry Matter is made up of separate chemical components –Chemistry = Interactions between atoms/molecules.
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CHEMISTRY TEST REVIEW. pHAtomsBondingWaterVocab. $100 $200 $300 $400 $500 FINAL JEOPARDY FINAL JEOPARDY.
Chapter 2 The Chemistry of Life.
KEY CONCEPT Water’s unique properties allow life to exist on Earth.
Biochemistry. What are the main parts of an atom? Essential Question.
ESCS Review. Composition of Matter (Review) Matter – anything that takes up space, and has mass. Mass – the quantity of matter an object has. Element.
ESCS Review. Composition of Matter (Review) Matter – anything that takes up space and has mass. Mass – the quantity of matter an object has (the same.
Chemistry of Life Nature of Matter Matter- Anything that has Mass and Volume Atoms are the smallest unit of matter that cannot be broken down by chemical.
The Chemistry of Life Ch
The Chemistry of Life. Section 2.1 Atoms The basic unit of matter are atoms. 100 million atoms would make a row only about 1 cm long! Consists of subatomic.
The Nature of Molecules Chapter 2. 2 Atomic Structure All matter is composed of atoms. Understanding the structure of atoms is critical to understanding.
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