<span>Which of the following substance are not formed by chemical bonds? </span>A MIXTURE
<span>The oven will transform electrical energy into heat energy</span>
Answer: C
Explanation: Air
Hope this helps! Brainlist Plz?
The answer should be D) Cold air because even though its true sound can travel through all types of matter, air which is a gas, can travel but it travels SLOWLY while sound travels quickly in SOLIDS.
