Chemistry – Lesson 1 (5.2) Flashcards
1
Q
why are atoms electrically neutral?
A
highly reactive nature makes it too dangerous
2
Q
what info on the periodic table lets you predict the number of electrons in an atom
A
the atomic number of an element tells you how many electrons are present in an atom of that element.
3
Q
compare the number of outermost electrons
(a) within peroid
(b) within groups
A
within periods because its left to right
4
Q
What are 3 things Atoms are made of
A
protons, neutrons, electrons
5
Q
where are electrons found
A
they are found in the nuclues
6
Q
A
