(Q).
Q: Single-displacement reactions are a subset of what? Choices: - gravitational reactions - kinetic reactions - particle reactions - redox reactions A:
(A).
redox reactions

(Q).
Q: Chemical reactions always involve energy. when methane burns, for example, it releases energy in the form of what? Choices: - movement and light - light and sound - heat and movement - heat and light A:
(A).
heat and light

(Q).
Q: At how many places does points source pollution enter water? Choices: - three - two - four - one A:
(A).
one