YOU NEED TEXTBOOK Get out a sheet of paper and title it Elements, Compounds, and Mixtures Pretest Put your name, date, and period in the top right corner.
It should be quiet when the bell rings or we will do write-offs and you will end up with a HW assignment. (tell your classmates to make good choices so this does NOT happen.) SPI 0807.9.3
Elements & Compounds Bell Work If you havent turned in Fridays assignment (Ch. 9 Sec.2) into the basket please do so.
The assignment is still on the board if you were absent (take a picture of it or write it down, it is due tomorrow) Start a new section in your science
notebook called Elements & Compounds Objective Classify common substances as elements or compounds based on their symbols or formulas. What you already
know!!! Atoms are the smallest unit of an element that maintains the properties of that element. Atoms make up all of the matter on earth. Element
A pure substance that cannot be separated into a simpler substance by physical or chemical means. Has a chemical symbol (He, O, Au). Elements can be the same. (ex. H 2, O2, N2)
Where do you find them? Neon (Ne) Sodium (Na) Chlorine (Cl)
Na + Cl = NaCl (table salt) Compound A pure substance composed of two or more different elements that are chemically combined. Has a chemical formula. (ex.
NaCl, H2O) What are some other common compounds? Common Compounds Compound Can ONLY be separated by
chemical means. Chemical and physical properties are different than the elements that make them. Ex. Salt is composed of sodium and chlorine. Sodium is a soft reactive metal. Chlorine is a greenish toxic gas/liquid.
Na + Cl = NaCl (table salt) 4Fe (iron) + 2O3 (oxygen) 2Fe2O3 (rust) Molecules Molecule- made up of at least 2 atoms. Element (ex. H2, O2, N2) same type
of atom Compound (ex. NaCl, H2O) N 2 (Nitrogen) H 2O (Water) different atoms Element or Compound? 1.
2. 3. 4. 5. Na2Cl Ca AuCl3 O N2
6. 3N 7.H2O 8.Fe2O3 9.Na2 10. CaCo3 <
Objective: Classify =""> common substances as elements or compounds based on their symbols or formulas. Can you do it???
Assessment 1. What is a pure substance that can be separated into two or more simpler substances only by chemical means? A. an element
B. a compound C. a formula D. an atom Assessment 2. A molecule of carbon dioxide is shown below. Based on the drawing of the molecule, what is the chemical
formula for carbon dioxide? A. CO B. 2CO C. C2O D. CO2 Assessment 3.
The chemical formula for glucose is C6H12O6. How many different elements make up one molecule of glucose? A. 1 B. 3 C. 12 D. 24
Assessment 4. Which option contains only compounds? A. B. Na, NaCl, Pb, C6H12O6
NH3, KNO3, Hg, Ne C. Au, Ni, Cu, Fe D.H2O, H2O2, H3O, CO2 Assessment 5. Which substance is classified as an element?
A. B. NaCl CO C. H2O D. Li Assessment A
carbohydrate molecule is shown in the diagram. It is made of carbon, hydrogen, and oxygen. 6. A carbohydrate is __________. A. a compound B. an element C. a mixture D. a solution
Assessment 7. Molecules consist of two or more __________. A. atoms B. protons C. neutrons D. electrons
Assessment 8. Which substance is a compound? A. O3 B. Cl2 C. CH4 D. N2
Assessment 9. Which substance is not a compound? A. N2 B. HCN C. SiO2 D. H2O2
Answer in a complete sentence. Differentiate between an element and a compound. (Whats the difference?) 10.
GALILEO and EGNOS Fotis Karamitsos, European Commission 27 January 2009 EUROPEAN COMMISSION Galileo - 5 Services Galileo Implementation Plan GALILEO re-structuring Year 2007: re-structuring Implementation funding secured: 3.4 billion € (some 4.7 billion $) European Commission Fully in charge or...
Grammar Unit Interjections Let's Review . . . The interjection is the last of the eight parts of speech. Just for the record, here are all eight: Noun Pronoun Adjective Verb Adverb Preposition Conjunction Interjection First, let's start with a...
A paragraph consists of a single theme throughout its body. The theme/topic of the paragraph is clearly stated at the beginning of the paragraph. Details, definitions, support, examples, and/or evidence should follow the topic sentence. The paragraph should end in...
Excess Rainfall Reading for today's material: Sections 5.3-5.7 Slides prepared by V.M. Merwade Excess rainfall Rainfall that is neither retained on the land surface nor infiltrated into the soil Graph of excess rainfall versus time is called excess rainfall hyetograph...
The Iliad and the Odyssey Ancient Greece. During the Greek Dark Age, poets called bards traveled to different . poli. The bards told stories in the form of long poems called epics. People would often pay to hear the bards...
SMART-BOARD® TECHNOLOGY . a powerful tool that uses advanced diagnostics and remote troubleshooting to minimize downtime. Meridian Series Ice and Water Dispensers. Highly reliable ice and water dispenser utilizing sealed bearing technology for maximum uptime.
Considerations to launch a NPP 1/3. By its nature a nuclear power programme involves issues associated with nuclear material, ionizing radiation and the related national and internationalchallenges.. This is a major undertaking requiring careful planning, preparation and investment in a...
Ready to download the document? Go ahead and hit continue!