Chemistry DIA 1 Review Part 1

Chemistry DIA Review Part 1

by William Hobson

Multiple Choice

Define matter.

• Is homogenous and has mass

• Is heterogenous and has mass

• anything that has mass and takes up space 

• Is homogenous and has volume

​Pure Substances

• ​Pure Substances: elements or compounds

​Mixtures

​

• ​Homogenous Mixtures: aka solutions; composition is constant throughout; cannot tell the difference between the different parts

• ​Heterogenous Mixtures: Composition is not uniform; can tell parts apart

​

Multiple Choice

Which of the follwing is a heterogeneous mixture?

Multiple Choice

Which of the following shows a pure substance?

Multiple Choice

Once you dissolve sugar in a glass of water, you have made a solution. What is another term for solution?

• heterogenous mixture

• element

• compound

• homogenous misture

Separation Techniques​

Mixtures ​are not chemically combined, can be physically separated

​Separation Techniques

• ​Filtration

• ​Chromatography

• ​Distillation

• ​Extraction

​Distillation

​Filtration

• ​Used to separate heterogeneous mixtures composed of solids and liquid.

• ​Can be used to separate insoluble substances from a soluble substance

​Chromatography

• ​ Separates components of a mixture based on ability of each component to be drawn across the surface of another material

  Mixture is usually liquid and is usually drawn across chromatography paper

​Distillation

• Used to separate homogeneous mixtures

  Based on differences in boiling points of substances involved

​Extraction

​

•Extraction (literally, "taking out by force") is a useful technique for separating compounds such as I2 and KMnO4 that have different polarities.

•The compounds to be separated are treated with a mixture of a polar solvent (such as H2O) and a nonpolar solvent (such as CCl4)

Multiple Choice

_________ is a useful separation technique use to separate substances of different polarities. Choose the correct image.

Multiple Choice

What was the separation technique referenced in the previous question?

• Extraction

• Chromatography

• Distillation

• Filtration

Multiple Choice

______ is a a useful separation technique used to separate substances of different boiling points. Choose the correct image.  

Multiple Choice

What was the separation technique used in the previous question?

• Extraction

• Distillation

• Chromatography

• Filtration

Multiple Choice

______ is a technique used in which separation occurs because various components travel at different rates. This mixture is usually liquid. Choose the correct image.

States of Matter​

Solid, Liquid, Gas, Plasma​

​Solid

• ​ Definite Shape

  Definite volume

  Not easily compressed

  Exerts pressure on the bottom of the container but not the sides

​Liquid

• Indefinite Shape (shape of container)

  Definite volume

  Not easily compressed

• ​Exerts pressure on the sides of the container

​Gas

• ​ Indefinite shape

  Indefinite volume

  Easily compressed

• ​Exerts pressure in all directions of the container

Multiple Choice

A substance has an indefinite shape, a definite volume, is not easily compressed, and exerts pressure on the sides of a container. What state of matter is this?

• solid

• liquid

• gas

• plasma

Multiple Choice

This substance has a definite shape, a definite volume, is not easily compressed, and exerts pressure on the bottom of a container. What state of matter is this?

• solid

• liquid

• gas

• plasma

Multiple Choice

This substance has an indefinite shape, an indefinite volume, is easily compressed, and it exerts pressure on all sides of the container. What state of matter is this?

• solid

• liquid

• gas

• plasma

​Kinetic Theory of Matter

• ​All matter consists of tiny particles that are in constant motion.

Multiple Choice

All collisions between these particles are perfectly elastic. The motion of thes e particles is rapid, constant, and random

• None of these