what is chemistry 9/17

Question 1

a chemical is any substance that has __________ composition

Answer 1

definite

Question 2

changes in chemicals or chemical reactions, take place _____

Answer 2

all around us

Question 3

the type and arrangement of _________ in a sample of matter determine the properties of the matter

Answer 3

particles

Question 4

most of the matter you encounter is in one of ____ states of matter

Answer 4

three

Question 5

the characteristics of a solid include ____ volume and shape

Answer 5

fixed

Question 6

particles that make up solids are held _____ in a ____ structure, so the particles can ____

Answer 6

tightly, rigid, vibrate but only slightly

Question 7

liquids have a __________volume

Answer 7

fixed

Question 8

liquids have a ____ shape

Answer 8

variable

Question 9

this situation occurs because particles in a liquid are held ________ and ______ slip past each other

Answer 9

loosely, can

Question 10

gases have ___ volume and ____ shape

Answer 10

variable, variable

Question 11

gas particles are ______ and are ___

Answer 11

far apart, not strongly attracted

Question 12

______ changes are changes in which the identity of a substance does not change

Answer 12

physical

Question 13

the changes of state are ____ changes

Answer 13

chemical

Question 14

in a ____ change, the identities of a substances change and new substances form

Answer 14

chemical

Question 15

in a word equation the left is a

Answer 15

reactant

Question 16

in a word equation the right is a

Answer 16

product