chapter 11 vocab

Question 1

a small particle that is the building block of matter

Answer 1

atom

Question 2

the number of protons in an atom of an element

Answer 2

atomic number

Question 3

a substance of two or more different elements chemically bonded together

Answer 3

compound

Question 4

a negatively charged particle that occupies the space in an atom outside the nucleus

Answer 4

electron

Question 5

the region surrounding an atoms nucleus where one or more electrons are most likely to be find

Answer 5

electron cloud

Question 6

a substance that consists of only one type of adom

Answer 6

element

Question 7

a mixture in which substances are not evenly mixed

Answer 7

heterogeneous mixture

Question 8

a mixture in which substances are evenly mixed but not bonded together

Answer 8

homogeneous mixture

Question 9

an atom that is no longer neutral because it has gained or lost electrons

Answer 9

ion

Question 10

atoms of the same element that have different numbers of neutrons

Answer 10

isotope

Question 11

anything that has mass and takes up space

Answer 11

matter

Question 12

matter that can vary in composition

Answer 12

mixture

Question 13

two or more atoms that are held together by covalent bonds and act as a unit

Answer 13

molecule

Question 14

a neutral partial in the nucleus of an atom

Answer 14

neutron

Question 15

the region in the center of an atom where mass and positive charge is concentrated

Answer 15

nucleus

Question 16

a positively charged particle in the nucleus of an atom

Answer 16

proton