Unit 1
423,000,000 in scientific notation
What is 4.23 x 108?
A negatively charged ion.
What is an anion?
The definition of fission.
What is atoms being split apart?
The chemical name for S4H2
What is Tetrasulfur dihydride?
The formula for density.
What is d = m/v ?
The number of significant figures in 0.00450100
What is 6?
The number of neutrons found in this atom:
2612Mg+1
What is 14?
The type of energy released by some high-energy radioactive atoms.
What is a gamma ray?
The difference between the structure and composition of ionic and covalent bonds (2 things!).
What is: covalent bonds share electrons and ionic bonds give/ take; ionic compounds contain metals and covalent compounds do not.
What is ionic?
The variable manipulated by the experimenter.
What is the independent variable?
The Bohr model of Sulfur-32.
What is 3 energy levels, 16 neutrons, 16 protons, 16 electrons.
The particle released during alpha decay.
What is 42He?
The chemical formula for Hexasilicon tetraoxygen.
What is Si6O4?
Identify the independent/ dependent variable: I want to test which car gets the best gas mileage.
Independent: type of car
Dependent: gas mileage
4.12 + 0.125 with correct significant figures.
What is 4.25?
The correct order of increasing ionization energy for K, O, and Si.
What is K, Si, and O?
The reason atoms undergo radioactive decay.
What is an atom emits particles or energy in order to have a stable balance of protons and neutrons in its nucleus?
The chemical formula for magnesium phosphide.
What is Mg3P2?
What is the sig fig rule for multiplication/ division and the rule for addition/ subtraction?
Multiplication/ division: least number of sig figs used
Addition/ subtraction: least number of decimal places used.
The density of an object weighing 65 g that was placed into a graduated cylinder that initially had 120 mL of water in it whose water changed to be 122.5 mL.
What is 26 g/mL?
The reason that Na has a larger atomic radius than Li.
What is increased numbers of energy levels as you move down a periodic table?
The amount of radioactive material left after 50 years that has a half life of 10 years after starting with 2,000 kg.
What is 62.5?
The lewis dot structure of PCl3.
What is Cl (6 e-)
|
(6 e-)Cl--P--Cl (6 e-)
(2 e-)
The definition of electronegativity.
What is the tendency for atoms to attract electrons in a bond?