| Question |
Answer |
| number of protons in an atom |
atomic number |
| part of the atom with a positive charge |
proton |
| part of the atom with a negative charge |
electron |
| center of an atom that is surrounded by a cloud of electrons |
nucleus |
| smallest unit of matter that everything is made of |
atom |
| part of the atom with a neutral charge |
neutron |
| number of protons and neutrons in an atom |
atomic mass |
| A substance made of all the same type of atoms |
element |
| a substance made of more than one type of atoms |
compound |
| Are elements or compounds found on the periodic table? |
elements only |
| Which two parts of the atom weigh the most? |
protons and neutrons |
| Which one part of the atom weighs the least? |
electrons |
| These atoms have the same number of protons, but different numbers of neutrons |
isotopes |
| atoms that have an electric charge because they have a different number of protons and electrons |
ions |
| Which side of the periodic table has nonmetals? |
right side |
| Which side of the periodic table include nonmetals? |
left side |
| In the periodic table, elements are arranged in __________ according to their atomic number. |
periods |
| Is the current periodic table the only way of organizing elements? |
NO |
