Chapter 7 vocab

Question 1

Atom

Answer 1

the smallest particle of an element with all the properties of the element that can combine with other atoms to form a molecule.

Question 2

Compound

Answer 2

a substance made of two or chemically combined elements.

Question 3

Electron

Answer 3

a subatomic particle with a negative charge located outside of an atom’s nucleus. Identified by Joseph Thompson.

Question 4

Element

Answer 4

Matter that cannot be changed into a simpler form by any ordinary physical or chemical process.

Question 5

Heterogeneous mixture

Answer 5

a mixtue in which the components are not evenly mixed so that different parts of the mixture have different compositions.

Question 6

Homogeneous mixture

Answer 6

a mixture in which the components are evenly mixed so that every part of th mixture is the same as any other solution.

Question 7

Ion

Answer 7

an atom or group of atoms having an electric charge as a result of losing or gaining one or more electrons.

Question 8

Isotope

Answer 8

atoms of the same element that have different numbers of neutrons and therefore different atomic masses.

Question 9

Molecule

Answer 9

two or more chemically bonded atoms; the smallest part of a compound having all the properties of the compound.

Question 10

Neutron

Answer 10

a subatomic partical located in an atom’s nucleus that has no electric charge and has a mass similar to that of a proton.

Question 11

Nucleus

Answer 11

the central region of an atom where protons and neutrons are located.

Question 12

Proton

Answer 12

a subatomic particle with a positive charge located in the nucleus of an atom.