vocab and questions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| atoms | the smallest particle of an element that can be identified with that element are...
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| element | a substance made of only one kind of atom is...
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| Brownian motion | evidence that atoms exist, as it results from the motion of neighboring atoms and molecules is...
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| molecule | the smallest particle of substance consisting of 2 or more atoms of the same or different elements bonded together is...
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| compound | a chemical substance made of atoms of 2 or more different elements combined in a fixed proportion is...
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| chemical formula | a description that uses numbers and symbols of elements is...
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| nucleons | the principal building block of the nucleus (protons/neutrons) are...
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| neutrons | an electrically neutral particle that is one of the 2 kinds of particles found in the nucleus of an atom are...
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| protons | a positively charged partical in the nucleus are...
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| isotopes | atoms of the same element having different numbers of neutrons are...
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| atomic number | the number of protons in the nucleus is...
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| ion | what an atom is called when the number of electrons is more or less than the number of protons in the atom is... (atom = net charge, no longer neutral)
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| shell model of the atom | model where electrons are grouped in concentric shells around the nucleus is...
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| periodic table | chart that lists elements by atomic number and by electron arrangements is...
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| plasma | a 4th phase in matter is...
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| nucleus | the positively charged center of the atom is...
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| protons and neutrons | mass number =...
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| number of electrons | number of protons =...
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| the number of protons in the nucleus | atomic number =...
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| fusion... in stars | What forms heavier elements and where?
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| in your body | Atoms __________ have been around since long before the solar system came into existence, more than 4.6 billion years ago.
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| neighboring atoms and molecules | Brownian motion is evidence that atoms exist, as it results from the motion of ___________________. They bump into the larger particles we can see.
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| Atoms of same or different elements | What are molecules made up of?
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| millions of atoms | Complex molecules are made up of...
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| in the nucleus | Where is most of the mass of atom located?
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| 1st-2 2nd-8 outer shell- no more than 8 | How many electrons can be held in each orbital?
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| the atoms physical and chemical properties | What does the arrangement of electrons in the shells dictate?
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| bonding | the attraction between protons and electrons that can cause atoms to combine
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| covalent bonds | form when two atoms share electrons
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| ionic bonds | form when electrons are transferred between atoms
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| gases | atoms move the fastest in...
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| liquids | atoms move faster in...
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| solids | atoms move slowest in...
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| matter was made of atoms | John Dalton studied chemical reactions ans said that...
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| the number of outer electrons | in the periodic table, groups (columns) show...
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| the number of electron shells | in the periodic table, periods (rows) show...
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