true for A+ :)
true for A+ :)
Single most (what?) substance ---common? ---important? ---fragile? This question is not formed properly and thus can not be answered
any substance made of two or more substances is either a compound or a mixture - if its a compound the atoms are chemically bonded together in a fixed ratio
According to current estimates, the mass in the Universe is made up of: * 68% dark energy. Not much is known yet about this type of substance. * 27% dark matter. Not much is known about this type of substance, either. * 5% regular matter - matter of known composition. Most of the regular matter is in the form of atoms; and most of it is in a state of matter known as a plasma.
iron is a pure substance. A pure substance is any form of matter that has a uniform composition and cannot be separated by physical methods such as filtration. A mixture can be separated into its components by physical means. <<>> Most nails are made from mild steel so they contain a small amount of carbon around 0.2%
true for A+ :)
Mixture
Although solid, gas and liquid are the most common states of matter on Earth, much of the baryonic matter of universe is in the form of hot plasma, both as rarefied interstellar medium and as dense stars.
No. The most fundamental parts of matter are: quarks and electrons.
The jelly-like substance in a sump hole is most likely biofilm, which is a mixture of bacteria, fungi, and other microorganisms. It is a common occurrence in moist environments like sump pits and helps break down organic matter. Regular cleaning and maintenance of the sump pump can help prevent buildup of this substance.
quarks