Atoms
The center of an atom is called what?
What is: The nucleus.
A neutron has a _______ charge
What is : Neutral
How are the atoms arranged on the periodic table?
What is : In order of increasing atomic number. From smallest to biggest.
What two particles make up an atom's nucleus?
What is : Protons and neutrons
How many electrons fit on the first energy level?
What is: 2
The positively charged particle of an atom.
What is : A proton
Electrons, protons and neutrons have what charge, and where are they found?
What is : Negative, positive and neutral. Electrons are found in orbitals, protons and neutrons found in the nucleus.
How many periods are on the periodic table? What do the period numbers tell you about an atom?
There are 7 periods and they tell how many electron shells an element has.
How does the mass of an electron compare to the mass of protons and neutrons?
What is : It is smaller. The mass is less.
How many electrons does Dy on the periodic table have?
What is matter?
Anything that has weight and takes up space.
The sum of protons and neutrons is called what?
What is : Atomic Mass
How many groups are on the periodic table and what do the group numbers tell you about an atom?
There are 18 groups and they tell you how many electrons are on the outermost level.
The atomic mass is equal to _______ + ________?
Number of protons + Number of neutrons
What are the two elements that are liquid at room temperature?
What is: Bromine and Mercury.
In an atom, which has the least mass?
A: nucleus B: proton C: neutron D: electron
What is : An electron.
This is what makes up matter?
What is : An atom
What is: the atomic number, number of protons, and number of electrons of Mg on the periodic table.
12, 12, 12
How many protons does Li on the periodic table have?
What is: 3
What is the Atomic Number of Helium?
What is: 2
Describe the difference between atomic number and mass number
What is : The atomic number is the number of protons in an atom. The Mass number is the sum of the number of protons and neutrons in an atom.
What is an isotope?
What is : An atoms of an element that has the same number of protons but different numbers of neutrons.
How many elements are on the periodic table?
What is :118
How many electrons does In on the periodic table have?
What is: 49
How many protons does Carbon have?
What is: 6