cytoplasm
Nickel is a chemical element; therefore, any object that contains only nickel is a pure substance.
The defining characteristic of a pure chemical substance is that any sample of it contains the same elements in the same mass proportions to one another.
A clamp is used for holding things like a flask when it contains a kind of substance that is hot or having a chemical reaction to it
A compound is a pure chemical substance that consists of two or more different chemical elements. It contains a fixed ratio of atomsthat are held together in a defined spatial arrangement by chemical bonds.
Iodine is a chemical element and contains no other substance. Tincture of iodine is a solution of iodine in alcohol, used to disinfect wounds, and contains four different elements.
This substance is alled apitoxin.
Connective tissue contains specialized cells, extracellular protein fibers, ground substance (fluid) and matrix. Matrix is protein fibers and ground substance combined and it surrounds the specialized cells.
salivary amalaze
salivary amalaze
This substance is DNA - deoxoribonucleic acid.
Nickel is a chemical element; therefore, any object that contains only nickel is a pure substance.
Scuba Breathing Apparatus.
Compounds
compound
Food that you eat
the kalachuchi bark contains a chemical called GLUCOSIDE PLUMIERID which is a bitter substance hence that poisonous substance protect the calachuchi
compound