chapter 1

Question 1

examples of matter the contains chemicals

Answer 1

virtually everything around you

Question 2

matter is composed of:

Answer 2

atoms are bound together to form several different molecules; atoms and molecules compose all common matter; chemical bonds hold them together

Question 3

soda pop is:

Answer 3

composed of atoms; CO2, H2O, and other substances that contribute flavor and color

Question 4

why does soda fizz?

Answer 4

carbon dioxide and water

Question 5

carbon dioxide molecule-

Answer 5

has 3 atoms, 1 carbon and 2 oxygen, held together in a straight line

Question 6

water molecule-

Answer 6

3 atoms, 1 oxygen and 2 hydrogen, bonded together, but rather than being in a straight line it is bent

Question 7

what is the relationship between pressure and bubbles in CO2 molecules?

Answer 7

pressure and bubbles are in CO2, the release of CO2 is why it bubbles; pressure is released

Question 8

are all chemicals poisonous? explain

Answer 8

no

Question 9

examples of poisonous chemicals

Answer 9

sometimes air

Question 10

examples of non-poisonous chemicals

Answer 10

water we drink, air, toothpaste

Question 11

who is richard feynman?

Answer 11

nobel prize winner physicist who came up with all things are made of atoms

Question 12

what is the importance of scientific method?

Answer 12

a way of learning that emphasizes observation and experimentation

Question 13

compare ancient greek philosophical understanding of science with current understanding of science.

Answer 13

greek: produce knowledge as the result of thoughts
current: scientific method

Question 14

scientific method-

first step - observation - explain the importance

Answer 14

involve measurig or observing some aspect of nature

Question 15

2nd step - research then form a hypothesis

Answer 15

??

Question 16

3rd step - experimentation

Answer 16

?

Question 17

4th step - analyze data then form a conclusion

Answer 17

?

Question 18

data results may either________ your hypothesis or _________

Answer 18

support

reject

Question 19

hypotheses, laws, and theories must be __________

Answer 19

tested and validated by experiment

Question 20

compare and contrast laws and theories

Answer 20

??

Question 21

scientific method

Answer 21

??

Question 22

who is antoine lavoisier and what are his contributions to science?

Answer 22

french chemist, made an observation about the physical world

Question 23

what is mass?

Answer 23

??

Question 24

explain lavoisier combustion eperiments

Answer 24

measured the property of mass in the process of combustion, there was no change in mass

Question 25

who is john dalton? what was his contribution to science?

Answer 25

??

Question 26

what is the atomic theory?

Answer 26

?

Question 27

how does modern technology provide images of atoms?

Answer 27

??

Question 28

chemistry involves

Answer 28

??

Question 29

chemistry requires ______ which involves_______ give an example

Answer 29

?

Question 30

lastly,, chemistry requires __________ which means _______________

Answer 30

??

Question 31

What is chemistry?

Answer 31

the science that seeks to understand what matter does by studying what atoms and molecules do