Chapter 2 Vocab

Question 1

the brain of the cell. located at the center

Answer 1

nucleus

Question 2

negatively charged particle and floats around the nucleus. it is the same as the number of protons

Answer 2

electron

Question 3

pure substance that consists of one type of atom.

Answer 3

element

Question 4

elements that have to different number of neutrons.

Answer 4

isotope

Question 5

H2O is an example take two or more elements that combine together to make a chemical compound

Answer 5

compound

Question 6

formed when one or more electrons are transferred form one atom to another.

Answer 6

ionic bond

Question 7

shared instead of transferred

Answer 7

covalent bond

Question 8

whats the difference between ionic and covalent bonds

Answer 8

ionic-transfers electrons

covalent- share electrons

Question 9

positively and negatively charged atoms

when an element looses an electrons and another one gains an electron

Answer 9

ions

Question 10

the smallest unit of most compounds

Answer 10

molecule

Question 11

when molecules are close together a slight attraction can develop between the regions of the molecules.

Answer 11

van der Waals forces

Question 12

the basic unit of matter greek word atomos which means unable to cut where the study of chemistry begins

Answer 12

atom