Show:
Subatomic
Elements
The Table
Symbols
Atomic problems
100
subatomic particle with a positive charge
proton
100
How is hydrogen different from other elements?
It has no neutrons
100
What does periodic mean?
repeating patterns of physical and chemical properties
100
C is the symbol for
Carbon
100
If Boron has an atomic mass of 11, and 5 protons, how many neutrons does it have?
6 neutrons
200
subatomic particle with a neutral charge
neutron
200
The sum of an elements protons and neutrons is called its
atomic number
200
How are the dot diagrams of elements in group 8 similar?
They all have 8 dots around their element names.
200
Fe is the symbol for
Iron
200
If nitrogen has an atomic mass of 14, and an atomic number of 7, how many protons does it have?
7 protons
300
subatomic particle with a negative charge
electron
300
The atomic number is the same as the number of ___________.
protons
300
What is a horizontal row called?
period
300
Na is the symbol for
Sodium
300
If oxygen has an atomic mass of 16, and an atomic number of 8, how many neutrons does it have?
8 neutrons
400
This tiny particle makes up protons and neutrons
quark
400
Are Mg (magnesium) and Ca (calcium) similar or different? How can you tell?
Similar, they are very close on the periodic table.
400
What is a vertical row called?
group
400
Au is the symbol for
gold
400
If Neon has an atomic mass of 20, and an atomic number of 10, how many electrons does it have?
10 electrons
500
Which weighs more: an electron or a neutron?
neutron
500
Are Rubidium and Radon similar or different? How can you tell?
Different, they are on opposite sides of the table.
500
What are the elements in group 18 called?
noble gases
500
NaCl (table salt) includes these two elements
sodium and chlorine
500
If arsenic (a carcinogen in cigarettes) has an atomic mass of 75, and an atomic number of 33, how many protons, neutrons, and electrons does it have?
33 protons, 33 electrons, 42 neutrons