Chemical Formulas

Question 1

Each element has what?

Answer 1

each element has it own chemical symbol

Question 2

What does a formula tell us about a compound?

Answer 2

1. elements the compound is made out of

2. the number of atoms of each element

Question 3

NaCl has a total of how many atoms and why?

Answer 3

Two beacuse both are Capital letters followed by undercase

Question 4

if the formula for a compound has changed then?

Answer 4

Then a new substance has been created.

Question 5

2(NaCl)4O——explain

Answer 5

two is multiplied to every number and the four if multiplied to the inside of the braket

Question 6

clear and colorless state of matter is?

Answer 6

gas

Question 7

Standard test for Co

2

Answer 7

flaming stick into container of Co2, flame will go out

Question 8

Chemical test for Co2

Answer 8

bubbles are blown into limewater,if the bubbles tuen out to be milky then its Co2

Question 9

Standard test for O2 (oxy)

Answer 9

glowing stick into oxygen makes it burn into fire

Question 10

Standart test for Hydrogen

Answer 10

when a burning stick is entered into a burning splint , you will hear a popping noise