SOMEONE PLEASE ANSWER THIS IM TIMED ON MY TEST When petrol is burned inside a car engine it reacts with oxygen from the air. the products are carbon dioxide and water. carbon dioxide is thought to contribute to climate change so some cars now do not use petrol as the fuel. they use hydrogen instead, when hydrogen is burned in oxygen no carbon dioxide is produced. just water.

write a word equation for both reactions;

use " - - >" for the arrow in your equations.

PLS ANSWER ILL MARK BRAINLIST PLEASE

it provides carbon dioxide and rhen it goes through the car and gives the gas oxygen

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.