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Flashcards in Finals Semester 1 Deck (18)
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0
Q

Filtration

A

is a way to separate out pure substances in a mixture comprised of particles, some of which are large enough to be stopped by porous material.

1
Q

Distillation

A

is a way of separating a mixture comprised of 2 or more liquids.

2
Q

Evaporation

A

is a way to separate mixtures where there are one or more dissolved solids.

3
Q

What would you do to separate sand from water

A

I would either use filteration or just boil off the water

4
Q

Law of conservation of mass

A

During a chemical reaction the mass the total mass of the product must equal the total mass of the reactants.

5
Q

Parts of daltons theory

A
  1. All matter is composed of tiny particles called atoms,
  2. Atoms of the same element are identical in terms of size, mass, and other properties.
  3. Atoms of different elements can chemically combine with one another to form chemical compounds
  4. Chemical reactions can be described as the separation, combination, or rearrangement of atoms.
    Dalton Thompson, Rutherford
6
Q

Law of definite proportions

A

which states that a given chemical compound always contains the same elements in the exact same proportions by mass

7
Q

What did dalton do

A

formulated an atomic theory based on the law of conservation of mass, the law of definite proportions, and the law of multiple proportions.

8
Q

What did Thompson do

A

He used the code ray tube to discover electrons and that they have a negative charge.

9
Q

What did Rutherford do

A

He used the gold foil Experiment to discover the nucleus

10
Q

Elements of the same group have

A

Similar properties

11
Q

Naming prefixes for molecular compounds

A
1-mono
2-di
3-tri
4-tetra
5-pent
6-hexa
7-hepta
8-octa
9-nona
10-deca
12
Q

Naming binary acids steps

A

Step 1: write hydro-
Step 2: use the root of the anions name with an ic ending.
Step 2.5: write acid. Don’t worry about little numbers.
Step3 stop writing.

13
Q

Naming oxy acids

A
has oxygen in them.
Step 1. Don't write hydro.
Step 2.  Use the root of the anion with these endings. 
Ate.➡️Ic
Ite.➡️Ous 
Step 2.7 write acid
Step 3 don't write anymore
14
Q

Mole to mole steps

A
  1. Balance the equation
  2. Put the variable and given mass in moles over the coefficient
    3.
15
Q

Mass to mass steps

A
  1. Balance the equations
  2. Put the variable and given mass over the the mass of the compounds.
  3. Cross multiply,
  4. Stop writing
16
Q

Empirical formula

A
Step 1. Change the % to mass
Step 2 put the mass over the molar mass
Step 3. Solve 
Step 4 devide by smallest one
Step 5: multiply until whole
17
Q

Molecular formula steps

A
  1. Get the mass of the empirical formula.
  2. Put the formula mass ( given) over the empirical mass
  3. Multiply the empirical formulas coefficients by the answer