Chemistry

A property of matter that is often used by chemist as an "identification tag" for a substance

The mass of an alpha a particle is how many times than that of the electron?

The forces that hold atoms together are called

If the number of gas molecule is doubled in a certain volume of gas the pressure

A symbolic representation to emphasize the valence shell of an atom is called

For which elements do the number of electrons in their outer or valence shell correspond to their group number?

Atoms or ions which have the same electronic configuration

The elements, germanium, silicon, which are commonly used for semiconductors belongs to what group of elements?

The components resulting from the reactions are called

Compounds which only contain carbon and hydrogen are called?

Which of the ff designation means that the amount of solute is expressed in physical mass units, i.e. grams, and the amount of solution (not solvent) is expressed in volume units, i.e. milliliters

The property of liquid which describes their resistance to flow is called

The anions and cations which are unaffected by the reaction in solution are called

In oxidation-reduction or redox reactions, the component supplying the electrons is called the

In oxidation-reduction or redox reactions, the component receiving the electrons is called

A covalent bond between atoms of identical electronegativity is called

A formula which describes only the numbers of each element in the molecule is called

The pairs of electrons not shared in the covalent bond are called

The particles in the nucleus, namely the neutrons and the protons, are collectively referred to as

The word proton comes from the greek word "proteios" meaning