Periodic Table of Elements

Question 1

what are the basic building blocks of matter?

Answer 1

elements

Question 2

matter is…

Answer 2

something that has mass and takes up space - it is made of individual or combinations of elements

Question 3

Dimitri Mendeleev

Answer 3

he was able to predict atomic weight, melting point, and state of matter (for elements)

Question 4

how did Mendeleev predict elements

Answer 4

reorganized table. then he left gaps in his table to place elements not known at the time. By looking at the chemical properties and physical properties of the elements next to a gap, he could also predict the properties of these undiscovered elements.

Question 5

metals

Answer 5

• shiny
• good conductors of heat+electricity
• are malleable
• are ductile

Question 6

nonmetals

Answer 6

-dull
-poor conductors of heat+electricity
- solids tend to be brittle and unmalleable
-few familiar objects are nonmetals

Question 7

metalloids

Answer 7

• semiconductors
• properties of metal and metalloids

Question 8

how can you make new substances with the same elements

Answer 8

-change the kinds of elements
- change the amount of those elements (the ratio)