Chemistry Regents Practice 1

Front

In an atom, an orbital represents

Back

the most probable location of an electron

Front

Which particle has a mass so small, it is considered to be 0 amu?

Back

electron

Front

During a flame test, sodium chloride produces an intense yellow flame. This yellow color is produced when electrons in excited atoms

Back

move to lower energy states within the atoms

Front

What quantity is the same among atoms of the same element?

Back

atomic number

Front

An atom that has 8 protons and 10 neutrons is an isotope of which element?

Back

oxygen

Front

Which elements have the most similar chemical properties? Options: Ge, As, and Sb; Mn, Fe, and Co; S, Se, and Te; P, S, and Cl

Back

S, Se, and Te

Front

In a bond between an atom of hydrogen and an atom of chlorine, the hydrogen atom has a

Back

weaker attraction for electrons

Front

Which atom has the lowest electronegativity? Options: Nitrogen, Oxygen, Fluorine, Neon

Back

Neon

Front

Which temperature is equal to 170 C? Options: 103 K, 443 K, -103 K, 498 K

Back

443 K

Front

Which statement accurately describes particles of an ideal gas, according to the kinetic molecular theory?

Back

The distance between the gas particles is much greater than the size of the particles