Chapter 2

Question 1

small, dense region within most nuclei in which the assembly or protons begins

Answer 1

nucleolus

Question 2

negatively charged particles; located outside the atomic nucleus

Answer 2

electron

Question 3

substance consisting entirely of one type of atom

Answer 3

element

Question 4

particle with a positive charge found in the nucleus

Answer 4

proton

Question 5

the center of an atom which contains the protons and neutrons

Answer 5

nucleus

Question 6

Atoms of the same element that differ in the number of neutrons they contain are known as ?

Answer 6

isotope

Question 7

substance formed by the chemical combination of two or more elements in definite proportions

Answer 7

compound

Question 8

atom that has a positive or negative charge

Answer 8

ion

Question 9

smallest unit of a most compounds

Answer 9

molecule

Question 10

bond formed by the sharing of electrons between atoms

Answer 10

covalent bond

Question 11

bond formed when one or more electrons are transferred from one atom to another

Answer 11

ionic bond

Question 12

what are the three particles of an atom?

Answer 12

electron, neutron, proton

Question 13

where are protons and neutrons located?

Answer 13

protons- in the nucleus

electrons- float around

Question 14

how to find the number or protons, electrons, and neutrons?

Answer 14

neutron- subtract the atomic number from the atomic mass. but first round the atomic mass
electrons- the same as the protons

Question 15

first ten elements

Answer 15

KNOW THEM

Question 16

basic unit of matter

Answer 16

atom