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Chemistry

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Dulce Hickle

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Cards in this guide (14)
What is thermodynamics

the study of the movement of energy and heat.

or

Thermodynamics is the branch of physics concerned with the conversion of different energy forms.

•DeltaG (rxn) = DeltaG (pdts) - DeltaDG (rcts) •DeltaG°(rxn) = -R T ln K •

What is a heterogeneous mixture

Heterogeneous means of different types. So a heterogeneous mixture is a mixture of dissimilar items. Homogeneous means of the same type so a homogeneous mixture would be a mixture of similar items.

A mixture where two or more substances are mixed together but are not chemically combined is called as an heterogeneous mixture.

In chemistry, heterogeneous mixture is a mixture of two or more different substances in the form of solution or colloids. For example, salad is an heterogeneous mixture


A heterogenous mixture is not uniform in composition and properties throughout.
What happens to water molecules when they are heated

Like all molecules, a molecule of H20 is in constant motion; 'hot' molecules move faster than 'cold' molecules. If the molecules move slowly enough the substance appears stationary to us (frozen water) and if they move quickly enough they will expand to fill their container (vapor or gas water.)

What factors are included on a phase diagram

Temperature and Pressure

Why is soap mixed with water


Its polar end mixes with the water so it can be washed away. ~APEX

Why does reducing solute particle size increase the speed at which the solute dissolves in water

It exposes more of the solute surface to the water molecules.

Who created the model of the atom that has quantizied levels of energy
What would dissolve the best in oil

grease

What is the best way to make a supersaturated solution

Heat the solution

What do the lines on a phase diagram represent

apex

What would mix the best with water non polar molecules polar molecules fatty molecules symmetrical molecules

Polar molecules are mixed better with water.

Read the following excerpt from Notes of a Native Son by James Baldwin Once this disease is contracted one can never be really carefree again for the fever without an instant's warning can recur at an


It compares hate to a disease that cannot be cured.

In what way does James Baldwin use a narrative structure

The essay tells a story about race relations in Harlem.

(APEX)

!/

Which of the following is an electrolyte solution

The answer is "Ions in water" on Apex

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