chapert 1
what lab equipment is used to measure liquids?
Graduated cylinder
what is the chemical symbol for carbon?
C
is plum pudding an Atomic model name?
yes
neon (Ne) has 8 valence electrons
true
how many bonds does carbon need?
4
what takes up space and has mass?
volume
what is the law of conservation of matter?
matter cannot be created nor destroyed
what is the label for the average atomic mass?
amu
what color flame will potassium nitrate make?
pink-lilac
what is the octet rule?
elements need 8 valence electrons in the outer shell
How do you find the density of an object?
mass divided by volume
how many sections are in the periodic table?
what happens when ionic bond forms
both cations and anions form at the same time
name two elements have one electron in the outer shell
hydrogen and lithium
what do ketones smell like?
minty
what is the difference between chemical and physical changes?
chemical changes into a new form of matter physical changes the appearance of the substance but not what it is.
what has 2 or more elements bonded together to form something?
a compound
what is the definition of the average atomic mass?
the average weight of an isotope
what group on the periodic table react and make colorful gases
halogens
what are the 3 main names for the shape of a molecule?
tetrahedral, trigonal pyramidal, liner
if you are given the density how can you find the volume?
mass divided by density
name 2 elements that have similar properties to beryllium (Be) and has an atomic mass higher than 130?
magnesium and aluminum
what is in an Atomic Model?
negitive electrons and a postive nucleus
what does the Roman numeral in a chemical name indicate?
you need to insert a roman numeral after the name of the metal to indicate the transition metal's charge
what does C10H20O smell like?
rose water