Show:
table of elements
vocabulary
random
true or false
Laws
100
What is the row that goes horizontal called?
period
100
What is an atom
the smallest piece of an element that cannot be divided
100
how do you make sugar
C12 H6 O12
100
true of false a atom can be divided to a smaller piece called a molecule
false
100
how many eletrons does the first shell hold
2
200
Whats the row that goes vertically called?
group
200
What is something made up of two or more elements
compound
200
how do you make table salt
chlorine and soduim
200
true or false democritus was the first to suggest atoms
true
200
how many does the 2nd shell hold
8
300
how do you find the number of protons?
its the atomic number
300
What is the smallest part of a substance that has all the properties of that substance
molecule
300
the properties of a compound are____ from the properties of the element that make it up
different
300
true or false most elements at room tempature are solids
true
300
how many fit in all the shells after wards
8
400
What is the number of protons needed to create the 3rd shell
11
400
What is the number written on the lower right corner of the chemical symbol on a chemical formula
subscrit
400
What is the result of heating sugar
black solid carbon
400
true or false there less than 100 known elements
false
400
how do you get atomic mass
add protons and neutrons
500
prontons added to neutrons makes what
atomic mass
500
what is a chemical bond
force of attraction that holds atoms together
500
how do you find the number of elements
the number after the chemical symbol
500
true or false the first 92 are found in nature
true
500
protons always equal what
electrons