Ch 1 and 2
How many sig figs are in 0.023400
5/6
7 periods and 18 groups
What are the sub levels?
s, p, d, and f
What's the difference between ionic and covalent bonds?
Ionic bonds is a transfer of electrons and covalent bonds is a share of electrons.
What is the dot structure for As?
As with 2 dots on one side and 1 dot on every other side
What is the difference between accuracy and precision?
Accuracy is how close measurement is to true value and precision is how close multiple measurements are to each other.
What are subatomic particles?
proton, neutron, and electron
1s2 2s2 2p6 3s2 3p6 4s2 3d6
What is ionization energy?
amount of energy required to remove an electron
What are the molecular shapes?
linear, bent, trigonal planar, pyramid, tetrahedral, trigonal bipyramidal
What's the difference between physical change and physical property?
Physical properties are measured and observed without changing the appearance of substance (color, odor, texture) and physical change is change in appearance without changing composition (cutting, breaking, melting etc)
How does an atom become an ion?
It loses or gains electrons
What are valence electrons?
Electrons in the outermost energy level
Where would you find alkaline metals?
group 2
What is the VSEPR theory?
It is the theory that states that shared and unshared pairs of electrons in the outermost energy level will be as far away from each other as possible
What's an element?
Something that can not be broken into a simpler substance
Who created the periodic table as we know it now (in increasing atomic number)
What is the noble gas abbreviation for Ba?
What do you call ½ of the distance between the nuclei of two like atoms?
atomic radius
How many unshared pairs of electrons in a tetrahedral?
none
What is matter?
Who discovered the proton?
Goldstein
What element has the configuration of 1s2 2s2 2p6 3s2 3p6 4d2 3d10 4p6 5s2 4d6
Ru/Ruthenium
What do you call elements in group 17?
halogens
What is the relationship between electronegativity, molecular shapes, and polarity?
Electronegativity and molecular shape will determine if a molecule is polar or nonpolar