he used charcoal, metal, wood and found objects.
metal and wood
If the surrounding air is zero degrees Celsius, steel and wood must have also the temperature of zero degrees Celsius. Wood is not warmer as many people believe. Although the temperatures are equal, you will perceive the steel as colder to touch. This is because it will absorb heat from your fingers more quickly than the wood (as it attempts to reduce your finger temperature to zero).
Titanium is Not the best metal for drilling but from a type of carbon steel
You first get a bowl of tap water, get a test tube with the argon in it. Take out the cork screw out of the test tube. Get a splint put it over the test tube when you open it and it it pops that means it is a metal
Most metals will scratch wood (of cause some (eg mercury) will be too soft to do so).
Conductivity test, Scratch test, Density test, Properties and Malleability ... :)
Actually, test tube holders are made out of a variety of materials, including wood, metal, and plastic. If all of the test tube holders in your school or lab happen to be made out of wood, it's likely because wood ones were the cheapest option available. Also, just one more benefit is that if considering an exothermic reaction (producing heat) in the test tube, the wood rack would not become hot, unlike a metal one
Wood is wood. It is not metal, it is a living thing.
A varnish or lacquer would do the trick, though nothing actually makes wood scratch proof just scratch resistant
If it is a deep scratch you can use a wood filler putty, if it is a light scratch you can buy markers in many different wood shades and just fill in the lines. If the scratch is light enough and you are in a pinch a brown crayon will help cover it up.
The test tube holders in my school are made of wood, but they are quite old, and modern one's might not be wood. They can be made of wood, plastic, styrofoam, or metal
Wood is a non-metal because it is not a conductor, metal is.
The scratch test is used for identifying minerals.You simply get a hard, white surface, and scratch the mineral on it.
Because Platinum is so unbelievably expensive that chances are, it's nickel. You probably mean Palladium, not Platinum. The only way to tell for sure is to do a scratch test at a jewelry store where they will scratch a microscopic bit off the metal off and react it with a chemical to test it.
Hardness of ductile materials can be determined by following methods..... 1) Brinell Hardness Test 2)Vickers Hardness Test 3)Rockwell Hardness Test 4) Scratch hardness test
You can write in the test booklet but you are not allowed to use scratch paper.