Question | Answer |
What direction is the periodic table read? | Left to right |
What are inert gases also called? | noble gases |
Periods run which direction? | horizontally |
Groups run which direction? | vertically |
Another name for groups are ___________. | families |
Group 1 is also called _____________ _______. | Alkali metals |
Group 2 is called _____________ __________________ __________________. | Alkaline earth metals |
The atomic number is located at the ________ of the squares. | top |
Atomic number stands for number of _______________. | protons |
Atomic mass or mass number stands for ____________ plus ______________. | protons neutrons |
Atomic mass is located at the ______________ of the square. | bottom |
The periods have the same number of __________________ ____________________. | energy levels |
The groups have the same number of ______________ __________________. | valence electrons |
Which elements are located below the rest of the periodic table? | actinides and lanthanides |
Each element has its own _______________ which represents it. | symbol |
Most elements are __________________. | metals |
The non-metals are located on the _____________ side of the table. | right |
The metals are located on the ____________ side of the periodic table. | left |
Most of the periodic table is made of _________________. | metals |
If an element has properties of both metals and non-metals, then it is a ______________. | metalloid |
The metalloids are located on the ______________________ of the periodic table. | zig-zag |
Most of the elements are made in _____________. | nature |
________________ are pure substances that cannot be broken down into simpler parts. | Elements |
When 2 elements combine chemically with bonds, it is called a _______________. | compound |
The 1st energy level holds up to ________ electrons. | two (2) |
The 2nd energy level holds up to ___________ electrons. | eight (8) |
The 3rd energy level holds up to _________ electrons. | eighteen (18) |
The electrons in the outermost energy level are called ____________ _______________. | Valence electrons |