vocabulary
balancing equations
mass
chemical or physical
notes
100
matter cannot be created nor destroyed
What is the law of conservation of mass
100
which coefficients belong to the following equation CO+O2-->CO2
2CO+O2-->2CO2
100
the equation for density
What is D=M/V
100
wood burning in a fire
chemical change
100
found on the right side of the periodic table
What are nonmentals
200
found on the periodic table
What are elements
200
balance the following H2+Br2-->HBr
H2+Br2-->2HBr
200
what is the equation for mass
What is M=D*V
200
water vapor condensing to form rain clouds
physical change
200
a nonmetal and metal chemical react
What is an ionic bond
300
can be physically seperated into 2 or more substances
What are mixtures
300
balance the following: S8+O2-->SO2
S8+8O2-->8SO2
300
what is the equation for volume
What is V=M/D
300
compared to 250g of gaseous nitrogen 250g of liquid nitrogen has greater
What is density
300
what is the chemical formula for the following: Al+3 SO4-2
Al2SO43
400
a change that produces new substances
What is a chemical change
400
balance the following: K+H2O-->KOH+H2
2K+2H2O-->2KOH+H2
400
what is the density of a solid cube that has a mass of 52.0grams and a volume of 24.5cm3?
What is 52.0/24.5= 2.12g/cm3
400
1.00g/mL
What is the density of water
400
what is the following chemical formula: Fe+3 Br-
FeBr3
500
a change from one state to another with chemical reactions
What is a physical change
500
balance the following: PbO2-->PbO+O2
2PbO2-->2PbO+1O2
500
what is the mass of a 500.0mL sample of seawater with a density of 1.025g/mL?
what is 500.00*1.025=512.5g
500
a sample of an element has a volume of 78.0mL and a density of 1.85g/mL. what is the mass in grams of the sample?
What is 144.3g
500
what is the following chemical formula: Cu2 O-2
CuO