number of molecules in 14C6H12O6
what is 14?
change in a substance that causes a new arrangement of atoms
what is a chemical change?
group 5 period 4 element
What is #23 Vanadium?
Is a property that is same for a substance no matter its location or sample size
What is
CHARACTERISTIC
The law of Conservation of Mass states that in a ________________________, matter cannot be created or destroyed.
What is chemical reaction?
Number of atoms of sulfur in H2SO4
what is one?
chemical property that causes paint to fade
what is light sensitivity?
what metalloids have between 50-60 protons?
What are Sb Antimony (51) and Te Tellurium (52)?
A characteristic physical property that is the temperature at which a substance escapes as gas
what is
BOILING POINT
The number of atoms of an element in the ___________________ of a chemical reaction must equal the number of atoms of an element in the products.
What is reactants?
number of atoms of oxygen in 7CaCO3
what is 21?
physical change in which a gas loses energy and becomes liquid
condensation
How many metals are in group 1?
What is 6?
A characteristic chemical property that is the ability for a substance to rust
what is
oxidation potential
number of atoms in 5CuNO3
what is 25?
(5xCU + 5xN + 5x3 O)
(5+5+15 = 25 total atoms)
this happens to chemical bonds in a chemical change
what is break!
Which element has the most similar properties to, but more protons than, Barium?
What is Radium (88)?
2 non-characteristic properties needed to determine whether a substance will sink or float in water
What are
mass and volume (Density = mass/volume)
number of atoms in 6Ba(MnO4)2
what is 66?
(6xBa + 12xMn + 48xO = 66 total atoms)
7 signs of a chemical change include:
What are:
1.) smoke 2.) fire/light release,
3.) sudden temperature change
4.) gas bubbles (new gas substance forms)
5.) precipitate (new solid substance forms)
6.) sudden heat release 7.) sudden color change
Period with the most non-metals
what is
PERIOD 2
3 non-characteristic properties of metals that make them useful in building machines
What are
ductility - for wires
malleability - for frames/housings/covers
electrical conductivity - for powering the device
2 KMnO4 + 16 HCl -->2 KCl +2 MnCl2 + 8 H2O + 5 Cl2
The Law of Conservation of Mass is best represented by which chemical equation below:
EXPLAIN WHY!
a.) CH4 + 3O2 ===> CO2 + 2H2O
b.) Al4C3 + 3H2O ===> CH4 + 4Al(OH)3
c.) 2H2O ===> H2 + O2
d.) Zn + 2HCl ===> ZnCl2 + H2