4.1 Cards Flashcards

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1
Q

what are atoms

A

the building blocks of matter

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2
Q

what are atoms made up of

A

protons neutrons and electrons

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3
Q

what does the proton determine

A

the atoms identity/what element is is

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4
Q

what do neutrons do

A

the hold the nucleus together

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5
Q

what do the electrons do

A

the determine reactivity

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6
Q

what is the mass of protons/neutrons

A

about 1 amu
heavy

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7
Q

what is the mass of electrons

A

almost 0
very little

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8
Q

what is an isotope

A

the same element with a different mass/ different number of neutron

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