maryemyrambfly
contestada

Chemical reactions _____.
occur only in living organisms
create and destroy atoms
only occur outside living organisms
produce new substances
2. What does the symbolin a chemical equation mean? Heat is supplied to the reaction.
A catalyst is needed.
yields
precipitate
3. A skeleton equation does NOT show which of the following?
the correct formulas of the reactants and products
the reactants on the left, the products on the right
an arrow connecting the reactants to the products
the relative amounts of reactant

Respuesta :

SilverDragon14
i put in the answers over there and they weren't all right according to the question.
for number 1 is was D(you got that right), 2 was A.heat is supplied to the reaction(it sowed a triangle symbol, not a yield one). 3 was D(you got this one right). 4 was D. the reaction is reversible. 5 was A.1,3,1, 3 

1) Chemical reactions produce new substances

Ans (d)

2) The symbol, Δ in a chemical reaction means that heat of supplied to the reaction.

Ans (a)

3) A skeleton equations does not show the reaction stoichiometry, i.e. the relative amounts of reactants and products.

Ans (d)