Chapter 2 Elements of Life and Death

Question 1

Why do some cereals add iron? Why is iron important?

Answer 1

we need the vitamin iron for our bloodstream to transport oxygen from our lungs to our bodies tissues

Question 2

What is the protein that transports O in our red blood cells? What is the role of iron in this protein?

Answer 2

Hemoglobin- O binds to the Fe ion in hemoglobin

Question 3

Whats is the condition of having low iron? What are the symptoms? Remedy?

Answer 3

Iron Deficiency Anemia
pale skin, headache, shortness of breath, fatuige
eating iron rich food or oral supplements

Question 4

What is matter?

Answer 4

substance with mass and takes up space

Question 5

Whats mass? whats weight?

Answer 5

mass- amount of matter a substance has
weight- the force exerted on an object by gravity
mass remains the same anywhere

Question 6

physical property

chem property

Answer 6

pp- measured without changing the COMPOSITION, mass, color,

cp- can only be observed during a chemical reaction flamibilty, oxidation

Question 7

extensive property

intensive property

Answer 7

ex- changes by size- mass

in- color, density

Question 8

mixture

Answer 8

not chemically binded combination of substances

Question 9

Homogeneous mixture vs heterogeneous

Answer 9

same throughout vs no same same throughout

Question 10

periodic table

Answer 10

Dimitri Mendelev-organized by atomic mass and predicted elements that were not yet discovered chemical properties

Question 11

Lab 1- reproducable experiment

Answer 11

the results aquired in the experiment can be replicated proving that the conclusion od the experiment was not a fluke

Question 12

Lab 1- experminatal variables for expertiminatal protocol

Answer 12

measureing the same amount of substance, not mixing the straws with each other