Atoms
What is the mass number of Hydrogen-3?
3
How many electrons can fit in the first electron shell?
Which element has an atomic number of 11?
Sodium (Na)
Which is heavier: a proton or an electron?
Proton
Where are protons located?
In the nucleus
Which about isotopes is true?
a. they have a different number of protons
b. they have a different atomic number
c. they have a different number of neutrons
C. They have a different number of neutrons
Draw a diagram for Helium (with the correct amount of electrons in each shell)
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What is the charge of a proton?
Positive
What are electrons located?
Electron Shells (outside the nucleus)
What do Carbon-12 and Carbon-13 have in common?
Same number of protons (atomic number)
Draw a diagram for Boron (with the correct amount of electrons in each shell)
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If an element has 19 protons, 19 electrons, and 20 neutrons, What is its ATOMIC NUMBER?
19 (Atomic number = number of Protons)
What is the charge of an electron?
Negative charge
Carbon has 6 protons. How many neutrons does Carbon-14 have?
14 - 6 = 8 neutrons
Draw a diagram for Oxygen (with the correct amount of electrons in each shell)
Orbital Shells
An atom's Mass Number is 30 and its Atomic Number is 17. How many neutrons does it have?
30 - 17 = 13 neutrons
What is the charge of a neutron?
Neutral / no charge
If an atom has 12 protons and 15 neutrons, what is its isotope name? Hint: Element - Mass Number
Magnesium-27
How many electrons can fit in the fourth electron shell?
a. 8
b. 12
c. 16
d. 18
d. 18
Look at Oxygen on your periodic table... Label the atomic number, mass number, element symbol, and element name. Draw the box!
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