Chem. Notes

Question 1

What make up the bubbles in boiling water?

Answer 1

Steam/Water Vapor

Question 2

What is 0ºc in F?

Answer 2

32ºF

Question 3

What is the equation for converting F in C?

Answer 3

(TF-32ºF) 1ºc/1.8ºF=TC

Question 4

What is the equation for converting C to F?

Answer 4

TC•1.8ºF/1ºc+32ºF= TF

Question 5

At what temperature are Fahrenheit in Celsius the same?

Answer 5

-40

Question 6

Δ100ºc=Δ___ºF

Answer 6

Δ180ºF

Question 7

Element:

Answer 7

A fundamental material consisting of one type of atom.

Question 8

Physical Proporties:

Answer 8

Proporties that dont change the chem. makeup of something

Question 9

Chemical Proporties:

Answer 9

Proporties that affect the chem. makeup of something.

Question 10

A Compound is:

Answer 10

when atoms different elements come together to make a substance/molecule A material where different elements are bonded together

Question 11

What do atoms make up?

Answer 11

Basically Everything

Question 12

An element is determined by the number of _____.

Answer 12

Protons

Question 13

What is a Chemical Formula?

Answer 13

A notion used to indicate the composition of a compound. A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound ex: Al2(SO4)3 (aluminum sulfate)

Question 14

What is an Elemental Formula?

Answer 14

A notion that uses the atomic symbol (and sometimes a numerical subscript) to denote how atoms are bonded in an element

Question 15

Mixture:

Answer 15

A combination of more than one substance in which the substance retain it’s proporties.

Question 16

An element is determined by the number of _____.

Answer 16

Protons

Question 17

What is a Chemical Formula?

Answer 17

A notion used to indicate the composition of a compound. A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound

Question 18

What is an Elemental Formula?

Answer 18

A notion that uses the atomic symbol (and sometimes a numerical subscript) to denote how atoms are bonded in an element

Question 19

How is the periodic table of elements organized?

Answer 19

Question 20

Most of an atom is made up of____.

Answer 20

Vacume

Question 21

Elements in the periodic table are organized by their _____.

Question 22

Non-Metals are ____ conductors of electricity.

Question 23

Metals are ______ conductors of electricity.

Answer 23

Great

Question 24

Metalloids are ______ conductors of electricity.

Answer 24

Very Weak

Question 25

True or False

A H atom takes up less space than a He atom.

Answer 25

False!

Since the He has 2 protons instea of 1, it is able to pull its two electrons closer to its neucleous. The H atom has less of a pull on its one electron.

Question 26

What is the equation of the ideal gas law?

Answer 26

PV=nRT

-

P=pressure (in atm) V=Volume (in L)

n=Number of moles

T=Tempreture (in K)

R=Gas constant (0.08206 atm*L/mol*K)

Question 27

How does suction work?

Answer 27

Question 28

What is in the air?

Answer 28

~80% N₂

~20% O2

CO₂

CO

Carbon (soot)

~1% Ar

and some other stuff

Question 29

At what temp. does water boil?

Answer 29

100^oc or 212^oF

Question 30

Ionic vs. dipol-diopl

Answer 30

Ionic would win