Laws and Reactions
What is a chemical reaction
Moving the atoms around, but not changing the atom itself
What is the charge of an electron
-
List 3 characteristics of metals
Lose electrons, solid at room temp, shiny, conduct heat and electricity, malleable, ductile
How many Sig Figs in 0.001
3
What is a nuclear reaction
A reaction that changes the atom itself
What is the charge of a proton
+
List 2 characteristics of nonmetals
Gain electrons, found in all three states, poor conductor of heat and electricity, solids are brittle
How many Sig Figs in 15.32
4
What is the law of conservation of mass
Both sides of a chemical reaction should weigh the same and have the same elements in the same amount, but different configurations
What does the atomic number represent
The number of protons
List 2 characteristics of metalloids
Has properties of metals and or nonmetals, known as semiconductors, solid at room temp
How many Sig Figs in 0.00000001
1
What is the Law of definite proportions
No matter how much you have of something, the proportion of the elements should be the same
What does the mass number represent
The number of neutrons and protons in an atom
Do nonmetals lose or gain electrons, thus creating an anion
gain
165.2 + 2661
2,826
What is an Isotope
An atom that has a differing number of neutrons than normal
Do metals lose or gain electrons, thus creating a cation
lose
1567 x 11
17,000