Show:
Chemistry
Matter
Atoms
Ions
Miscellaneous
100
What is matter?
Anything that has mass and takes up space
100
What is a chemical change?
Chemical composition is varied and changes
100
What are the three subatomic particles?
Proton, neutron, and electron
100
What are valence electrons?
Electrons in outer most energy level
100
What is the difference between groups and periods on the periodic table?
Groups are columns, periods are rows
200
What are the five areas of study of chemistry?
Organic, Inorganic, Analytical, Physical, Biochemistry
200
What two ways do we use to separate mixtures?
Distillation and filtration
200
What is an isotope?
Atom has same number of protons but different numbers of neutrons
200
What is the difference between cations and anions?
Cations are positive, groups 1A-3A Anions are negative, groups 5A-7A
200
How do you calculate percent error?
(Experimental-Accepted)/Accepted x 100
300
What is the difference between pure and applied chemistry?
Pure: Pursuit for knowledge sake Applied: Pursuit for a practical goal
300
What is the difference between mixtures and compounds?
Mixtures are chemically combined and compounds are not
300
What are the four orbitals in electron configuration?
s, p, d, f
300
What are alloys?
Mixtures made up of different elements, one of which is a metal
300
What is the trend for atomic radius?
Increases left and down
400
What is the difference between independent and dependent variable?
Independent: What you can manipulate or change; cause Dependent: The result of the change; effect
400
What is the law of conservation of mass?
Mass of products equals mass of reactants in chemical reaction
400
What is the Bohr model of the atom like?
Electrons orbit around the nucleus and can jump to different energy levels
400
Describe the difference between interstitial and substitutional alloys.
Interstitial: Fill in the spaces between the cations Substitutional: Fill in for another atom
400
Give the names of the groups of 1A, 2A, 7A, and 8A
Alkali, alkali earth, halogens, noble gases
500
In terms of your science fair project, walk us through the steps of the scientific method for your project
Variable
500
Give me an example of an extensive and intensive property.
Extensive: Mass and volume Intensive: Type, clothing
500
Describe Rutherford's Gold Foil experiment and what he found from it.
Fired alpha particles at atom. Hit something in middle and bounced back. Many particles passed through. Small dense nucleus in middle with a lot of empty space
500
What is the octet rule and how does it apply to metals and nonmetals?
Atoms want to have a full octet of 8 valence electrons. Metals normally lose valence electrons to become positive and nonmetals gain electrons to become negative
500
Write the name for the ionic compound of Copper (I) Sulfide.
CuS2