science

Question 1

atom

Answer 1

the smallest component of an element.

Question 2

nucleus

Answer 2

the central part of an atom that is made up of protons and neutrons.

Question 3

proton

Answer 3

protons are positively charged particles found within an atomic nucleus.

Question 4

neutron

Answer 4

an uncharged particle found within an atomic nucleus.

Question 5

electron

Answer 5

negatively charged particle located in shells that surround an atom’s nucleus.

Question 6

molecule

Answer 6

it is atoms that are bonded together.

Question 7

quark

Answer 7

a quark is a tiny particle that make up protons and neutrons

Question 8

alkali metals

Answer 8

1st group on the periodic table. highly reactive metals. want to get rid of electrons.

Question 9

noble gases

Answer 9

last group on the periodic table. stable.

Question 10

cation

Answer 10

a positively charged ion

Question 11

anion

Answer 11

a negatively charged ion

Question 12

valence shell

Answer 12

the most outer shell of an atom

Question 13

valence electrons

Answer 13

the electrons in the valence shell

Question 14

ion

Answer 14

an atom that carries a positive or negative charge

Question 15

octet

Answer 15

a group of 8 electrons in the valence shell

Question 16

AMU

Answer 16

atomic mass unit