Define That
Apply that Knowledge
All in the Family
Keep it Random
Do that Math
100
What are isotopes?
atoms of the same element with different number of neutrons
100
How is the atomic mass of a element determined?
all the isotopes for that element are averaged to find the atomic mass
100
Give the correct number for each family. Alkaline Metals Alkaline Earth Metals Halogen Group Carbon Family
Alkaline Metals-1 Alkaline Earth Metals-2 Halogen Group-17 Carbon Family-14
100
Draw the current atom model and label each part.
Electron cloud model Electrons should be on the outside In the nucleus should have protons and neutrons
100
Krypton has an atomic number of 36. How many electrons does it have?
36
200
What is an atomic number?
Number of protons
200
How is the periodic table arranged today?
by atomic number
200
Give the correct number for each family. Boron Family Nobel Gases Nitrogen Family Oxygen Family
Boron Family-13 Nobel Gases-18 Nitrogen Family-15 Oxygen Family-16
200
What does the atomic number tell you?
# of protons and # of electrons
200
How many neutrons does nitrogen have?
14-7=7
300
Define half-life.
The amount of time it takes for half of an atom to decay (break down)
300
What makes an element radioactive?
Neutron breaks down into a beta particle releasing an electron or an alpha particle is released
300
What family is the most reactive non-mental?
Halogen family, group 17
300
Who developed the first periodic table?
Mendeleev
300
Yttrium has an atomic number of 39 and an atomic mass of 89.91. Does yttrium have isotopes and how do you know?
Yes, atomic mass is an average of all of its isotopes
400
What is a period on the periodic table?
A row that has patterns of physical and chemical properties
400
How was Mendeleev’s periodic table arranged?
by atomic mass
400
What element is the most reactive metal?
Francium
400
What are synthetic elements?
Man made elements
400
What is the atomic mass for magnesium?
24.305
500
Define group or family.
Column list base on similar physical and chemical properties
500
Why are radioactive elements so dangerous to living things?
Radiation gives off particles when it breaks down. These particles can cause cancer or mutations
500
What color are the nonmetals in your textbook?
yellow
500
What color are the metalloids in your textbook?
green
500
What is the atomic number for aluminum?
13
M
e
n
u