Unit 1 Flashcards
What is the mass number equal to?
Protons + neutrons
What are the neutrons equal to?
Mass - atomic OR mass - protons
What is an isotope?
Atoms with the same number of protons but a different number of neutrons
How do you calculate the average rate of reaction?
Change in volume / change in time
Give examples of how a reaction can be made faster
Bigger surface area, higher temperature, higher concentration, catalyst
On a reaction rate graph what indicates a faster reaction rate?
Steeper slope
Covalent molecular bonding is between what?
Non-metals
Covalent network bonding is between what?
Non-metals (B,C,Si)
Ionic bonding is between what?
Metal + non-metal
Metallic bonding is between what?
Metals
In a covalent molecular, what forces hold the molecules together?
Weak Van der Waals forces
Covalent molecular share what to form full outer shells?
Unpaired outer electrons
In a covalent molecular what holds the atoms together?
Attraction of two positive nuclei
Do covalent molecular conduct?
No
Do CM dissolve in water?
No
Do CM have a high or low melting/boiling point?
Low
Do CN conduct?
No
Do CN dissolve in water?
No
Do CN have a high or low melting/boiling point?
High
Do IL conduct?
Yes in molten or solution
Do IL dissolve in water?
Yes
Do IL have a high or low melting/boiling point?
High
How do you calculate relative atomic mass?
Total mass of 100 atoms/ 100 (See ring binder for example)
How does an acid form?
Non-metal oxide + water -> acid
