1) describe how the Dalton model of an atom has changed over time because of discovery of subatomic particles a) Dalton believed that atoms were the smallest things b) Dalton thought that not everything was made up of atoms c) Dalton believed that there were smaller things than atoms. 2) recall the relative mass of: a) proton b) neutron c) electron a) p=1 , n=v.small , e=1 b) p=1 , n=1 , e=1 c) p=1 , n=1 , e=v.small 3) recall the relative charge of: a) proton b) neutron c) electron a) p=0 , n=+ , e=- b) p=+ , n=0 , e=- c) p=+ , n=- , e=0 4) describe the nucleus of an atom as very small compared to the overall size of the atom a) the nucleus of the atom is small than the atom because its inside of the atom b) the nucleus of the atom is bigger than an atom because its outside the atom 5) recall the meaning of the term mass of an atom a) mass number = p+e b) smaller number on the periodic table c) mass number = p+n 6) describe isotopes as different atoms of the same element containing the same number of protons but different numbers of neutrons in their nuclei a) isotope = is an atom of an element with same number of n+e but different number of p b) isotope = an atom of an element with same number of p+e but different number of n c) isotope = is an atom of an element with same number of p+n but different number of e
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chemistry quiz
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