Periodic Table In Black and White Wallpaper

This wallpaper periodic table in black and white is a simple and clean design.

Periodic table in black and whiteEach element is represented by its atomic number, symbol, name, and atomic mass. This periodic table also includes the four new Period 7 elements: nihonium, moscovium, tennessine, and oganesson.

This wallpaper is optimized to look great on a 4K display at 3840 x 2160 pixels but looks great on HD monitors and devices when scaled down. Click the image or download to view the full-sized image. If you’d like to print a copy, download the PDF and set your options to “Fit” and “Landscape” for best results.

Periodic Table In White and BlackThis periodic table is the same table, just reversed. The text and borders are white and the background is black. Click the image or download directly.

Neon Periodic Table With 118 Elements Wallpaper

If you look closely, this neon periodic table wallpaper shows each element surrounded by colored neon bulbs.

Neon Periodic Table - 2017 Edition (118 Elements)The different colors correspond to the different element groups. Match the group to the color using the legend along the bottom. Each element is represented by its number, symbol, name, and atomic mass. This table also includes the four new Period 7 elements: nihonium, moscovium, tennessine, and oganesson.

This wallpaper is optimized to look great on a 4K display at 3840 x 2160 pixels but looks great on HD monitors and devices when scaled down. Click the image or download to view the full-sized image. If you’d like to print a copy, download the PDF and set your options to “Fit” and “Landscape” for best results.

Some folks find a white background a little hard on the eyes for their monitors. This periodic table is the same table with a black background and high-contrast white text. Click the image or download directly.

Neon Periodic Table With Black Background - 2017 Edition

Large Print Periodic Table

No time for fine print. This large print periodic table will help you with your eye strain.

Color Large Print Periodic Table

Color Large Print Periodic TableThis color periodic table contains the usual element numbers, symbols, element names, and atomic masses, but has the added bonus of larger type. This periodic table includes all 118 elements known as of 2017.

The element names are as large as I could consistently make them. I chose to make the names a uniform font size with the exception of the really long ones (rutherfordium, darmstadtium, roentgenium, and praseodymium). The rest of the information is much easier to read than the usual printable periodic table.

To print, download the PDF and choose either “Fit” or “Shrink oversized pages” under Page Sizing and Handling in the print options. Remember to choose Landscape for your orientation to use more space on the paper.

Black and White Large Print Periodic Table

This is basically the same table, only monochromatic!

Large Print Periodic TableDownload this PDF if you don’t have access to a color printer, or just want to save your color inks or toners. Choose the same options as the color periodic table to print on a single sheet of paper.

If you like this table, check out our other printable periodic tables.

Cool Electroactive Slime That Reacts to Styrofoam

Electroactive slime is a opaque slime that reacts to static electricity. (Josh Hallett)

Electroactive slime is a opaque slime that reacts to static electricity. (Josh Hallett)

This recipe makes cool, non-toxic slime that appears to have a life of its own! It’s electroactive slime, so it reacts when it’s close to electrically charged objects. Rub a piece of polystyrene foam or a balloon on your hair or a wall to charge it and observe how the slime reacts.

Difficulty: Average

Time Required: 30 minutes

Electroactive Slime Materials

  • 3/4 c cornstarch (175 mL)
  • 2 c vegetable oil (475 mL)
  • glass or tumbler
  • refrigerator
  • 1x6x6 inch (25x150x150 mm) styrofoam

How To Make Electroactive Slime

  1. Mix the cornstarch and vegetable oil together in the glass.
  2. Refrigerate the slime mixture until it is chilled.
  3. Remove from the refrigerator and stir (separation is normal).
  4. Allow the mixture to warm enough so that it can flow.
  5. Take a block of styrofoam and charge it by rubbing it on hair, wool, or a cat.
  6. Tip the container of slime (which should flow slowly). Place the charged styrofoam about an inch (2 cm) from the flowing slime. It should stop flowing and seem to gel!
  7. If you wiggle the charged styrofoam the slime may follow or pieces of it may even break off.
  8. When the styrofoam is removed the slime will continue to flow.
  9. After use, refrigerate slime in a sealed container.

Be sure to try other slime recipes, too!

See Electroactive Slime in Action

Here’s a variation of the recipe that shows how the slime reacts with static electricity. If she had refrigerated her slime, it would be more “slimy”. The slime has a life of its own whether it’s chilled or not:

Super Easy Soap Slime Recipe

Use translucent glycerin soap to make soap slime you can see through. (darwin Bell)

Use translucent glycerin soap to make soap slime you can see through. (darwin Bell)

Soap slime is an easy-to-make type of slime that is fun to play with and makes clean-up fun. Here’s how you make it.

Soap Slime Materials

  • leftover pieces from bars of soap (or you can use a whole bar)
  • water
  • jar

Make Soap Slime

You’ve probably made soap slime accidentally by allowing soap to get wet and stay wet in the bathtub or shower. Here’s how you make soap slime, on purpose:

  1. Place the soap pieces in a jar.
  2. Cover the soap with water.
  3. Let the jar sit for a day or two. You’ve got slime!

You can play with the slime or you can use it during bath time like you would ordinary soap. The soap slime with rinse away with water. Soap isn’t edible, so don’t eat this slime either. Also keep it out of your eyes. If you get some soap slime in your eyes, immediately rinse it out with water. Otherwise, have good clean fun!

Make Dish Soap Slime

Another cool type of soap slime to make uses dish soap. The ingredients for this slime are:

  • liquid dish soap (choose the color you want the slime to be)
  • glitter
  • clear non-toxic glue (PVA or polyvinyl alcohol school glue)
  • salt water or saline solution (although you’ll get better results using borax in water)

Food That Glows in Black Light

Bananas are one of the foods that glow under black light. Only the margin of the spots glows. (endolith)

Bananas are one of the foods that glow under black light. Only the margin of the spots glows. (endolith)

Do you want food that glows in the dark? With the exception of certain types of phosphorescent fungi, edibles don’t tend to glow. However, there is some food that glows under a black light. The black light emits ultraviolet radiation, which excites atoms and causes them to release fluorescent light. Fluorescence is a fast process, so food only glows when the black light is on.

Here is a list of foods that glow and the color of the light that is produced. Tonic water glows the brightest. You can use it in place of water in certain recipes to make foods light up. Try it in white frosting, gelatin, and drinks. You can also add a bright glow to food by mixing in vitamin B2.

  • tonic water (bright blue because of the quinine that is an ingredient)
  • cooking oil (yellow to greenish-yellow)
  • olive oil (orange)
  • eggs (shell is dark violet-red, egg white is bright pale yellow)
  • honey (golden yellow)
  • pineapple (vivid blue fruit, mostly reflected light, outside doesn’t glow)
  • ketchup (yellow – not bright)
  • milk (pale yellow)
  • vanilla ice cream (yellow)
  • yogurt (yellow for vanilla, possibly pink for flavored)
  • banana (blue ring around spots, some color if you cut the banana)
  • sliced lettuce or other greens (dull red from the chlorophyll)
  • sliced peppers (dull red)
  • sliced squash (yellow)
  • some energy drinks (if they have enough B vitamins)

Foods That Reflect Black Light

Most white foods (except for egg whites) don’t glow or fluoresce under black light, but they do reflect back the light so they appear bright blue or purple. Examples of reflective foods include:

  • marshmallows
  • white bread
  • pasta
  • rice
  • potato chips
  • tortilla chips

If a food doesn’t glow, consider serving it on a white doily or fluorescent plastic plate. Fluorescent plastic cups are available in many colors. Most clear plastic has a blue glowing edge under black light. You can also decorate using glow sticks. Just make sure they stay sealed!

See Glowing Food in Action

Take a look at people’s reactions to glowing food. As you might guess, adding vitamins or tonic water to food can affect the flavor. Food usually glows green or blue, which might not seem that appetizing. It’s fun though!

What Is Casein? Casein Definition and Chemistry

The word casein comes from the Latin name for cheese. (Andrew Blight)

The word casein comes from the Latin name for cheese. (Andrew Blight)

What Is Casein?

Casein is the name given to a group of related proteins found in mammalian milk. The word “casein” comes from the Latin word caseus, which means “cheese”, which makes sense since casein is one of the main chemical substances in cheese. Cheese is made by coagulating casein, typically by acidifying milk and adding the enzyme rennet to coagulate protein. Casein is also used as binder to make safety matches, as a food additive (protein supplement), to make a quick-drying water-soluble paint, for glue and plastics, and to remineralize tooth enamel.

Casein makes up 80% of the proteins found in cow’s milk and 20%-45% of the proteins in human milk. These proteins are all phosphoproteins, which contain a high number of proline residues (an amino acid) and no disulfide bridges. The protein is poorly soluble in water, found in milk as a suspension of particles that are termed “casein micelles”. The micelles are considered colloidal particles.

Casein Safety and Health Concerns

A small percentage of people are allergic to casein and should avoid it, but most of the negative press the protein receives relating to health is unfounded. Research into a suspected link between milk consumption and cancer has shown casein cannot be identified as a causative chemical. Early studies linking chronic diseases and the A1 or A2 beta casein genetic variants have not been substantiated by modern research.