During which season is the sun highest in the sky? summer

autumn

winter

spring

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Compare and contrast physical changes with chemical changes.