Ions
What is different between an ion and its regular element?
The number of electrons
Why do we place elements in the same group on the periodic table?
They have similar properties
How do you find the mass of an atom?
neutrons+protons
What is in the nucleus of an atom?
Protons and neutrons
According to the U.S. Constitution, the president is part of which of the three branches of government?
1. Executive
2. Judical
3. Legislative
1. Executive
How do we find the charge of an ion?
Protons-electrons
I have a calcium atom. Which of the following can I expect to have similar properties?
1. Beryllium
2. Sodium
3. Neon
4. Fluorine
1. Beryllium
When two atoms have the same number of protons, but different numbers of neutrons, what are they called?
isotopes
What is the structure of an atom? Where are things located?
In the nucleus: Protons and Nuetrons
Outside the nucleus: Electrons
What is the process of water turning into vapor called?
Evaporation
If I have 25 protons and 23 electrons, what is my charge?
+2
If you change the number of protons in an element, what happens?
You change the element
If my nucleus has 43 protons and 45 neutrons, what is my mass?
43+45=88
What did Rutherford do in his experiment? (Gold Foil)
He shot alpha particles at a sheet of gold foil.
What is the process by which plants make their food called?
Photosynthesis
If my atom has 22 protons, 23 neutrons, and 21 electrons, what is my charge?
+1
Why can I expect Barium and Radium to react similarly to water?
They are in the same group on the periodic table, so they have similar qualities
I have an atom with 22 protons, 21 neutrons, and 23 electrons. What is my mass?
22+21=43
What was the result of the experiment? What happened?
If a backyard is 50 feet long and 20 feet wide, how many square feet is the yard? (Include units!)
1000 Ft2
In Bohr models (circly thingies), how do we draw electrons?
Dots on the orbitals
Which of the following would I expect to act like Neon?
1. Chlorine
2. Fluorine
3. Krypton
4. Sodium
3. Krypton
Why are the masses on a periodic table decimals?
What did Rutherford's experiment tell us? What did we learn?
An atom has a small, positively charged center called the nucleus.
If a car is traveling at 40 mph, how long will it take to go 190 miles?
4 hours and 45 min
OR 4.75 hrs