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atoms and molecules

a harder version of my other game!!!

what is the study of matter? chemistry.
What is the smallest piece of an element. an atom.
what is the center of an atom? The nucleus.
what is a positively charged particle? a proton
What is a nuetrally charged partical? A nuetron.
What is a negatively charged particle? an electron.
they travel around what in a random order? the nucleus
protons and nuetron are the heaviest or lightest part of the atom? Heaviest.
What is the approximate number of protons and nuetrons in an atom? the atomic mass.
Protons and electrons are always equal, so there is no overall -----? charge.
the average distance away from the nucleus at which electrons can travel around is called what? a shell.
how many protons are there in the first shell? 2 protons.
how many protons are in the 2nd shell? 8 protons.
how many protons are in the 3rd shell? 18.
Each shell is able to hold a certain number of what depending on its distance from the nucleus. Electrons
What is the number of protons in a nucleus? Atomic number
What do scientist think about atoms, because no one has seen an atom because they are too small? Atomic theory
The atomic theory was devised by who? niels bohr
an atom has the same number of protons as what? electrons
what is a substance that contains only one kind of atom? an element
What is an abbreviation for the names of symbols? the Chemical symbol
chemical symbols are based on two languages. What are they? English and latin
What is the periodic table of elements? It is the classification system that organizes elements based on atomic numbers and groups them into rows and columns based on the chemical and physical properties.
Who was the periodic table of elements founded by? demitri mendeleev
Each square has three pieces of information. What are they? The chemical symbol, the element name, and the atomic number.
What are the horizontal rows that all have the same number of shells? Periods
What are groups? The vertical columns that have the same number of electrons in their outer shell.
What is hte group elements that possess similar chemical properties and reacts similarly with other elements? Families
What do families consist of? they are color coded, alkali metals are the first 2 columns on the left, there are metals, semi-metals ( also known as metalloids), and non-metals (gas).
What do elements in a group have in common? They have similar physical and chemical properties.
What are atoms held together by chemical forces? Molecules
Created by: Shanetta