General Chemistry

Question 1

Compounds can be separated by ____________ changes while mixtures can be separated by ____________ changes

Answer 1

chemical; physical

Question 2

When separating using filtration, ___________ particles are captured in the filter and ___________ particles pass through into the filtrate

Answer 2

large; dissolved

Question 3

Distillation separates substances based on differences in _____________________

Answer 3

boiling point

Question 4

When a solid changes phase directly to a gas, mass _____________

Answer 4

does not change

Question 5

When reading glassware, you record a number up to __________________ decimal place

Answer 5

one estimated

Question 6

The percent composition of a compound is ________________

Answer 6

always the same

Question 7

When a hydrocarbon is combusted, all the carbon ends up in _______ and all the hydrogen ends up in _________

Answer 7

CO₂; H₂O

Question 8

The diatomic elements

Answer 8

Br2 I2 N2 Cl2 H2 O2 F2

Question 9

For glucose, C6H12O6 is the ____________ formula and CH2O is the ___________ formula

Answer 9

Molecular; empirical

Question 10

Percent yield formula

Answer 10

% Y = (experimental/theoretical) * 100%

Question 11

Percent error formula

Answer 11

% E = |(experimental – theoretical)/theoretical| * 100%

Question 12

The amount of product produced and energy exchanged during a reaction is determined by the _______________________

Answer 12

Limiting reactant

Question 13

Ions that always produce soluble ionic compounds

Answer 13

SNAP

Sodium, nitrate, ammonium, potassium

Question 14

During a chemical or physical process, mass and ___________ are conserved

Answer 14

Charge

Question 15

Dilution formula

Answer 15

(M1)(V1) = (M2)(V2)