topic 2 lesson 4

Question 1

Anything naturally occurring in the environment that humans use is called a _______ ______

Answer 1

natural resources

Question 2

chemical and resources made by humans are called
———- ————

Answer 2

synthetic materials

Question 3

As a complex as some synthetic substances are, all synthetic materials can ultimately be broken down in to

Answer 3

natural resources

Question 4

chemists create synthetic materials by using

Answer 4

chemical reactions

Question 5

by knowing the _______ and ________ properties of substances, scienties know how they will _______ in __________ ways

Answer 5

physical, chemical, react, and predictable

Question 6

This means that scientist can _________ substances to ________ materials with specific _________ that sever paticular _______

Answer 6

combined, produce, structer, and functions

Question 7

what is a polymer

Answer 7

are a long chain of molecules that are made out repeating units called monomers

Question 8

what is a monomer

Answer 8

a molecule that can bond with identical molecules

Question 9

what are some characteristics of polymers

Answer 9

strong, flexible, and elastic

Question 10

what is the most common synthetic polymers

Answer 10

plastic

Question 11

what are 3 natural fibers that we have used for thousands of years

Answer 11

cotton, linen, and silk

Question 12

what is an example of synthetic fibers

Answer 12

Acrylic, mylon, and spandex

Question 13

what are examples of synthetic food

Answer 13

American cheese and Takis<3

Question 14

what is an example of synthetic Medicine

Answer 14

ginger

Question 15

what is an example of synthetic fuels

Answer 15

gasoline