Element Symbols
Al
What is aluminum
H
What is hydrogen
drink cans
What is aluminum
weather balloons
What is helium
The order of elements in the modern periodic table is based upon-
If an atom has 12 protons and 15 neutrons, what is its isotope name?
Magnesium - 27
Mg
What is magnesium
O
What is oxygen
electrical wires
What is copper
strong teeth and bones
What is calcium
One similarity of atoms of elements that are in the same group is-
number of valence electrons
If an element has 20 protons, 20 electrons, and 20 neutrons, What is its ATOMIC NUMBER?
20 Atomic Number = Number of Protons
Si
What is silicone
Ar
Argon
diamonds
What is carbon
use it to breath
What is oxygen
Which characteristics of an element can be determined precisely by considering only the element’s specific position on the periodic table?
number of protons in each atom
An atoms Mass Number is 30.... Keeping in mind that the atomic number is 17, what can you tell about the atom? ((Hint: How do you find the number of neutrons?))
It has 13 neutrons.. mass number - atomic number = neutrons 30 - 17= 13
S
Zn
What is zinc
used to kill small germs in cuts
What is iodine
a germ killer in swimming pools
What is chlorine
What element is after Nitrogen ?
Oxygen
Neutral atoms always have an equal number of what two subatomic particles?
protons and electrons
Ca
What is Calcium
Na
The symbol for Sodium
makes materials glow
What is phosphorus
How do you write an element (include the mass number, atomic number and symbol)? State the order and give an example
Mass Number then Symbol then Atomic Number
True or False
Mass number = the number of neutrons + the atomic number or numbers protons
What is True
Which about isotopes is true? a. they have the same number of neutrons b. they have a different atomic number c. they have the same number of protons
C. They have the same number of protons