Scientific Notation and Significant Figures
Name the parts of a number written in scientific notation
Coefficient, base 10, exponent
what is a chemical property?
The changing of a substance into another through the reorganization of chemical bonds
What is the definition of matter?
anything that has weight and takes up space
Elements that are good conductors
metals
name three characteristics of non-metals
1. poor conductors of electricity
2. lack metallic luster
3. brittle - easily breakable
Convert 0.0000512 to scientific notation
5.12 x 10^-5
What is a physical property?
changing the form of a substance and not its composition
Give a definition of a homogeneous mixture and heterogeneous mixture.
homogeneous - uniform composition mixture
heterogeneous - nonuniform composition mixture
the smallest component of matter
atom
what is the symbol for Osmium
Os
Convert 9.1 x 10^7 to a real number
91000000
Define the difference between a solid, liquid, and gas.
solid - fixed shape, fixed volume
liquid - no definite shape, fixed volume
gas - no definite shape or no definite volume
Give an example of a pure substance
various
definition of an element
How is the periodic table arranged
By atomic number
How many certain digits and how many uncertain digits should be reported in a measurement?
certain digits - at least 1 or the numbers on the instrument
uncertain digits - there is always only 1 uncertain digit, which is the one estimated
Give an example of a physical change.
various answers
which side of a chemical equation is the reactants and products on?
reactants -left
products - right
when two or more different elements are chemically bonded
What is a row called?
periodic row
how many significant figures should you include in the answer to a problem?
the number of digits in the least precise measurement
Given an example of a chemical change.
various answers
molecule- composed of one or more atoms
Compound - specific type of molecule made up of different elements
name of the elements that exist on far right of periodic table
non metals
What is a column called?
A Group or Family