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Copy of Egarcia-8th grade science final exam review
Transcript of Copy of Egarcia-8th grade science final exam review
*Do Background Research
*make a Hypothesis
*Test Your Hypothesis *Experiment *Analyze Your Data *Draw a Conclusion
*Examine Results Lab Safety Goggles
hair tied up
apron Our definition of Hypothisis:
*A possible solution to a testible question* The word "pseudo" means fake. Science vs Pseudoscience 3 states of matter liquid
gas Chemical and physical
properties *Chemical properties are properties of an element or compound in chemical reactions.
*Physical properties are properties of an element or compound that can be observed without a chemical reaction of the substance. Unit 2 Base unit measure Gram =mass
Liter=Volume 3 types of graphs bar graphs line graphs pie graphs a bar graph tells the #
of students and the
most voted sport line graphs show when business goes up and down shows the percentage of things independent and dependent
It is a variable that stands alone and isn't changed by the other variables you are trying to measure. VS. dependent:
It is something that depends on other factors. is when Elements and compounds can move from one phase to another phase when special physical forces are presentange in states of matter. States of matter atom-smallest part of element: the smallest portion into which an element can be divided and still retain its properties, made up of a dense, positively charged nucleus surrounded by a system of electrons. Compounds- something made by combining two or more things Mixture- A mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs ATOM UNIT 3 Prezi vocabulary part of an atom:
There are three parts of an atom. These three parts are known as protons, electrons and neutrons Periodic Table The periodic table is a table of the chemical elements, showing the symbols for the elements, their full names, and their atomic numbers. Metal : A solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity. Nonmetal Non-metals are the elements in groups 14-16 of the periodic table. Non-metals are not able to conduct electricity or heat very well. metalloids whose properties are intermediate between those of metals and solid nonmetals Names of the groups in the Periodic Table Groups 1-2 (except hydrogen) and 13-18 are termed main group elements.
Groups 3-11 are termed transition elements.
Main group elements in the first two rows of the table are called typical elements.
The first row of the f-block elements are called lanthanoids . The second row of the f-block elements are called actanoids
Group 1: alkali metals
•Group 2: alkaline earth metals
•Group 11: coinage metals (not an IUPAC approved name)
•Group 15: pnictogens (not an IUPAC approved name)
•Group 16: chalcogens
•Group 17: halogens
•Group 18: noble gases Ionic Bonds A chemical bond between two ions with opposite charges, characteristic of salts. Also called electrovalent bond.