Question

what are the horizontal rows containing elements from different groups with different properties called?
A.) Columns
B.) Categories
C.) Periods

Answer 1

post you next question on this post dont create a new one

Answer 2

ok sorry

Answer 3

and its c

Answer 4

how many elements have been identified
A.) 209
B.) 118
C.) 150

Answer 5

is there more to the question?

Answer 6

NOPE

Answer 7

i think c but im not 100% sure

Answer 8

which of these are elements that occur most in nature?
A.) Leptons
B.) Isotopes
C.) Quarks

Answer 9

A.) Leptons

Answer 10

What type of reaction occurs when atoms combine to form molecules or when molecules break down into atoms?
A.) Physical
B.) Chemical
C.) Nuclear

Answer 11

C.) Nuclear

Answer 12

hey you go to k12?

Answer 13

True or False:
A negatively charged atomic particle is called an electron.

Answer 14

true i think

Answer 15

its a k-12 program called
A+

Answer 16

and my school is called Turning Point

Answer 17

oohh
Yeah i got to a school where u can work at ur own pace and everything is on the computer but we use that k12 program

Answer 18

True or False:
Atoms have no overall electric charge

Answer 19

lets use this for work and chat on the little mail icon thing

Answer 20

oh i usually eat i 12

Answer 21

true

Answer 22

ii sent u a message
so this can be work so

Answer 23

true for the question or the lunch thing?

Answer 24

What determines the different isotopes of an atom?
A.) the number of electrons
B.) the number of protons
C.) the number of nuetrons

Answer 25

thats for the chat box!!!!!!!!!!!!!

Answer 26

B.) the number of protons

Answer 27

B.) Categories