Elements and compounds Atoms and elements Periodic table Periodic table and compounds Chemistry vocabulary
100
What is copper?
malleable, used as an antibacterial and identified by 29
100
What is a cation?
Formed when an element loses an electron
100
Who is Dmitri Mendeleev?
This scientist came up with the brilliant idea to arrange the periodic table into groups and rows
100
What are periods?
horizontal rows in the periodic table
100
What is formed when an element gains an electron
Anion
200
What is sulfide anion?
2 ions of Aluminum combine with 3 ions of this (Clue: atomic number 16)
200
What is Nitrogen?
The most abundant element on the earth's surface
200
Bromine
Protons = 35; neutrons = 45, electrons = 35. Who am I?
200
What has shiny luster, good conductivity, and also is malleable? It also loses electron(s)
Metals
200
What is the ability of metals to be drawn into thin wires?
Ductile
300
What is Dinitrogen pentoxide?
N2O5
300
What is an electron?
Metals like to lose it, while non-metals are looking to gain it...
300
What is gadolinum?
atomic number of 64 and a mass number of 157
300
What is sodium carbonate?
Na2CO3
300
What are alkali metals?
Sodium belongs to Group IA...These elements in group IA are .........
400
What are halogens?
Magnesium needs to combine with 2 ions of all elements from this group
400
what is the nucleus?
Is positively charged
Is very dense
Contains nearly all of the atom's mass
400
What is sodium?
A metal which reacts vigorously with water, has 2 electrons in first orbit and one electron in the third orbit
400
What are compounds containing a metal and non-metal called?
Ionic compounds
400
What is sodium phosphate?
Na3PO4
500
What are CHNOPS?
A group of elements present in the human body go by this name...Hint: remember the video we saw about elements?
500
What are electrons located in the outermost orbit of an atom called?
Valence electrons
500
What are compounds?
Elements combine in fixed proportions to form ---------------------
500
What are compounds containing two non-metals called?
covalent compounds
500
What is the Al2(SO4)3?
Formula when Al combines with sulfate ions?






chemistry

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