Basic Chem Flashcards
1
Q
What does a Bohr model tell you
A
How many electrons shells an atom has how many electrons it has in each shell How many protons it has how many neutrons it has
2
Q
What is the difference between ionic and covalent bonds
A
Covalent bonds share while ionic bonds give or take
3
Q
What is the difference between a chemical and physical change
A
Physical changes can be reversed and chemical changes cannot
4
Q
Why are chemical reactions important in a cell
A
They allow cells to change energy and make new molecules necessary for life
5
Q
Why do polar molecules form Intermolecular bonds
A
The positive dipoles of one atom are attracted to the negative dipoles of another atom and thus intramolecular bonds are formed
