What is my answer rounded to in a multiplication or division problem?
least number of sig figs
100
Where do we read fluid's measurements?
bottom of meniscus
100
chemical compounds are made up of these two components
cation and anion
100
neutrons charge is ?
0 they are neutral
100
if composed of only 2 types of elements it is called a binary and ends in ???
-ide
200
What is my answer rounded to in addition or subtraction problems?
least number of decimal places
200
How do we take measurements?
record up to the known and one unknown digit
200
What do subscripts represent in a compound?
number of atoms
200
as isotope has different number of ___________ and same number of _____________
neutrons protons
200
If a compound consists of more than 2 elements it ends in ______ or ______
-ate or -ite
300
round to the correct number of sig figs
8.7 +15.43 +19=
43
300
How do we know what 'known' is when taking measurements?
tick marks on the instrument
300
What does the superscript represent in a chemical formula
the atoms charge
300
calculate the average atomic mass of Cl with these 2 isotopes
isotope Chlorine-37 mass of 37.0 amu occurs 75.77%
isotope Chlorine-35 mass of 35.0 amu occurs 24.23%
36.51 amu
300
write the formula for aluminum nitrite
Al(NO2)3
400
Round this to 3 sig figs
0.00076321 and
57.048 and
98.473
0.000763
57.0
98.5
400
Write the chemical formula for
Cr and CO3 (the 3 is subscript)