Topic 2.1 version 2

Types of Matter

100

What classification of matter can be broken down into simpler substances only through a chemical reaction?

Compound 

200

Categorize the following as an Element, Compound, or Mixture: Brass

Mixture

300

This term describes a mixture where the composition is uniform throughout, meaning you cannot see the different components.

Homogenous mixture

400

Categorize the following as an Element, Compound, or Mixture: Cl_{2 gas}

Diatomic element 

500

What would a particle level model for a Mixture: Two Elements look like? 

A model showing two different types of unbonded atoms, with all particles mixed together

Separating Mixtures

100

Name a separation technique used to separate a liquid from an undissolved solid, like sand from water.

Filtration 

200

This separation technique relies on the differing solubilities and attraction to a stationary phase, often used to separate colors in ink

Chromatography

300

You have a homogeneous mixture of salt dissolved in water. Besides distillation, what method would you use to recover only the salt?

Evaporation 

400

Why is the process of Distillation able to successfully separate a mixture of two liquids?

Because of their different boiling points 

500

If you are separating a mixture of two liquids using distillation, the component that is collected first is called what? 

Distillate

IMFs

100

Chemical bonds are a form of intermolecular forces, True or False? 

False - they are intramolecular forces 

200

What property of a substance is a direct measure of how easily a liquid evaporates into a gas?

Vapor Pressure or Volatility

300

You are performing the penny water drop experiment: there are 2 trials, one with pure water and one with a mixture of soap and water.

Which penny will hold more droplets and why? 

The one with pure water because the soap interrupts the intermolecular forces of water, lowering the attraction between water molecules. 

400

(Honors Only) Which specific type of dipole-dipole force occurs when a hydrogen atom is bonded to a highly electronegative atom like Nitrogen (N), Oxygen (O), or Fluorine (F)?

Hydrogen Bonding

500

(Honors Only) Acetone is a polar molecule with dipole-dipole forces, and Propane is a nonpolar molecule with only dispersion forces. Which liquid would have the lowest vapor pressure and why?

Acetone, because stronger IMFs (dipole-dipole) hold the molecules together more tightly, making it harder for them to evaporate and therefore resulting in the lowest vapor pressure