Monday, February 24th: Defining art & color
Exploring the boundary between science and art
Looking at the images below, decide if each is an example of art or science.
The Color Wheel
Colors can be primary, secondary, or tertiary.
Primary colors: red, yellow, and blue cannot be made by mixing other colors together.
Secondary colors: orange, green, and purple. Made my mixing two primary colors together.
Tertiary colors: red-orange, yellow-orange, yellow-green, blue-green, blue-purple, red-purple. Made my mixing a primary and tertiary color together.
Mixing a tertiary and primary color will make brown.
Colors across from each other are called complementary. Mixing two complementary colors will make gray.
Primary colors: red, yellow, and blue cannot be made by mixing other colors together.
Secondary colors: orange, green, and purple. Made my mixing two primary colors together.
Tertiary colors: red-orange, yellow-orange, yellow-green, blue-green, blue-purple, red-purple. Made my mixing a primary and tertiary color together.
Mixing a tertiary and primary color will make brown.
Colors across from each other are called complementary. Mixing two complementary colors will make gray.
Hue, Chroma, and Value
The terms hue, value, and chroma can be used to tell even more about a color.
HUE: the color (red, blue-green, chartreuse!)
VALUE: the brightness of the color (how dark or light the color is)
CHROMA:the intensity of the color (how bold and pure or dull and diluted the color is)
HUE: the color (red, blue-green, chartreuse!)
VALUE: the brightness of the color (how dark or light the color is)
CHROMA:the intensity of the color (how bold and pure or dull and diluted the color is)
Paper Chromatography
Paper chromatography is a separation technique that is based upon how strongly dyes are adsorbed onto the paper (or the stationary phase) and how soluble the dyes are in the developing solvent (the mobile phase). A small amount of the mixture to be separated is placed close to the edge of a piece of paper. The edge of the paper is immersed in a solution (we are using water). As the solution is absorbed and climbs up the paper by capillary action, the components of the sample are carried along at different rates, resulting in separate bands of color.
In our first experiment, we are going to use paper chromatography to separate the colors in makers. What do you predict that you will see in the filter paper for each color marker? What colors do you think were used to make the mystery separations?
In our first experiment, we are going to use paper chromatography to separate the colors in makers. What do you predict that you will see in the filter paper for each color marker? What colors do you think were used to make the mystery separations?
Try this at Home :: Candy Chromatography :: due Monday 3/3
Step 1: Choose a piece of candy that contains artificial colors
Step 2: Dip candy in water and place it in the center of coffee filter
Step 3: Allow candy to sit on filter for about 15 minutes
Step 4: Remove candy from filter and allow filter to air dry
Step 5: Write the heading "Candy Chromatography" on a new page in your lab sketchbook
Step 6: Glue dry filter into sketchbook and write a description of the color separations in your experiment
Click here for a short instructional video!
In class next Monday we will try to guess what type of candy each person used in their experiment, so try to keep it a secret until then!
Step 2: Dip candy in water and place it in the center of coffee filter
Step 3: Allow candy to sit on filter for about 15 minutes
Step 4: Remove candy from filter and allow filter to air dry
Step 5: Write the heading "Candy Chromatography" on a new page in your lab sketchbook
Step 6: Glue dry filter into sketchbook and write a description of the color separations in your experiment
Click here for a short instructional video!
In class next Monday we will try to guess what type of candy each person used in their experiment, so try to keep it a secret until then!