Is water classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? Explain. Is carbon dioxide classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? Explain. Classify whether sulfur is a pure substance, heterogeneous mixture, or a...
Is helium classified as a pure substance, a pure element, a homogeneous mixture, or a heterogeneous mixture? Is a pure silver ring classified as an element, a compound, a homogeneous mixture, or a heterogeneous mixture? Explain. Is milk classified as a ...
Scientists believe petroleum comes from the remains of plants and animals (Remains are what is left after a plant or animal has died.) What exactly is petroleum? Petroleum is a mineral that is a mixture of hydrocarbons. It is an oily liquid which may be brown green or black in colors. ...
Is lead metal classified as a pure substance (element or compound) or a mixture? Explain. Describe what you would expect to observe, if anything, when a piece of nickel is placed in a solution of copper(II) nitrate. What is the difference in composition between pure iron and steel?
An element, such as copper, is a substance that has been broken down as far as it can be using chemical means. Each element is made up of just one kind of atom. Copper has an atomic number of 29 on the periodic table. Answer and Explanation: ...
Because it is a soft metal and can be easily damaged, pewter must be given special care. To give your pewter items a refreshed glow, try this homemade, all-green cleaner: Mix 1 teaspoon salt and 1 cup vinegar. Add enough flour to the mixture to make a paste. Apply the paste using ...
Answer: Copper matte is amixture of copper sulfide (Cu2S) and some iron sulfide (FeS). Why flux is used in smelting? Flux, in metallurgy, any substance introduced in the smelting of oresto promote fluidity and to remove objectionable impurities in the form of slag. ... In soldering, a ...
64 to 98 percent IACS. These alloys prove to be quite useful for semiconductor mounts and resistance welding tips. Sometimes copper-based materials require high hardness and strength with moderate Cu conductivity; an example is a mixture of copper, nickel and silicon, which gives a Cu ...
Our invention relates to the separation of the components of a mixture and is particularly applicable to fractional distillation in a high vacuum with complete recovery of the material being fractionated; i. e. without "holdup" in the column. The term "fractional distillation" as herein employed...
Leary2, Jenifer M. Scancella1, Zheng Wang2, Jinny L. Liu2, Beatriz Orihuela3, Dan Rittschof3, Christopher M. Spillmann2 & Kathryn J. Wahl1 Barnacles adhere by producing a mixture of cement proteins (CPs) that organize into a permanently bonded layer displayed...