This is Science.Its about the peridic table. Tell me what percent you think your right. i.e. 100% 50%?

Question

1.Concept maping:Use the folowing terms to create a concept map: periodic table, elements, groups, periods, metals, nonmetals, metalloids

Critical Thinking

2. When an element with 115 protons in it nucleus is synthesized, will it be a metal, a nonmetal, or a metalloid.Explain

3.Why was Mendeleev not able to make any predictions about the noble gas elements

4.Your classmate has offered to give you a piece of sodium he found while hiking. What is you response?explain

5. Determine the identity of each element described below
a.This is the most reactive metal in its period and cannot be found uncombined in nature. Each atom of the element contains 19 protons

b.This nonmetal is in the same group as lead

Answer 1

1-k.i don't understand the first question.wouldnt everything u said go under the periodic table?
2-most probably element 115 will be a metal since it is in group 5.It comes under the b group which are the transitional metals.
3-dont know.i thought that he knew everything.
4-sodium is a very reactive metal.it would be dangerous to hold it.
5a-obviously it is potassium
5b-tin

Answer 2

1-Periodic Table at the top, split to elements, elements split to metals, metalloids and nonmetals. Also from Periodic Table split to Groups and split to Periods. (100%).

2-It will be a poor metal (on the metal side but touching the metal/nonmetal line). (100%).

3-Mendeleev arranged his elements by AMU not Atomic Number so he really did not have the in Families like we do today (90.135%).

4-I'd have two responses. First I would not believe him, since, due to it reactivity, Na is not found in elemental form in nature. Second, maybe he found some in a bottle that someone lost or put there. In this case I'd so no (although I could think of some pretty cool things to do with it) because it is dangerous, reacting even with contact to air. (100%).

5a-Potassium (K) (100%).
5b-Carbon (C) and Silicon (Si) could both be answered correctly (100%).

Get an "A".

Answer 3

Draw a concept map with periodic table at the top, a line going to elements, hen dividing into metals, metalloids and nonmetals. Anothr line from periodic table to groups and another to periods. Some groups are metals, some are nonmetals. A period includes each metal nonmetal and metalloid.

115 is 3 from the noble gases. either nonmetal or metalloid.

Mendeleev could not see or experiment with the noble gases

Sodium is dangerous. It is never found uncombined. It reacts with air and water.

19 protons is K
Rn is same period as Pb

Answer 4

one million) Mendeleev's periodic table is wise because of the fact he arranged the atoms in accordance to atomic weight. based on the atomic weight of atoms, chemist could have the potential to decipher what atom is in question. 2) Moseley's periodic table is distinctive as he arranged the atoms in terms of proton numbers. 3) that's sort of a calender because of the fact the numbers are increasing in sequence. 4) metals are chanced on on the left most of the periodic table. metalloids (or transition metals) are chanced on in the middle and non metals are chanced on on the ideal of the periodic table.