B. Fill in the blanks.
1. Pure substances include _
and _
2. Mendeleev arranged the elements in the _ _
3. The basic unit of an element is the _
4. _ is the Latin name of silver.
5. A molecule of a compound is made of tow Or more _
6. NaCl is _ chloride and KCI
is _ chloride.
7. Rust is the compound _ _
Answers
Answer:
Pure substances are both elements and compounds.
Mendeleev arranged elements in horizontal rows and vertical columns of a table in order of their increasing atomic weights in such away that the elements with similar properties occupied the same vertical column or group
An atom is the basic unit of an element.
The Latin word for silver is argentum
A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together. Note that the two nitrogen atoms which comprise a nitrogen molecule move as a unit. Microscopic view of the molecules of the compound water (gas phase).
Potassium chloride (KCl, or potassium salt) is a metal halide salt composed of potassium and chlorine. It is odorless and has a white or colorless vitreous crystal appearance. The solid dissolves readily in water, and its solutions have a salt-like taste.
Rust is the common name for iron oxide, which as the name implies, is made up of the elements iron and oxygen. The compound is Fe2O3. Iron combines quickly with oxygen, and the process of turning iron to iron oxide is an example of corrosion. You can see things like steel rust because steel contains iron
Answer:
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