What does an exothermic reaction do?
Answer and explanation
Correct answer: C. Releases energy to the surroundings
- Step 1: In exothermic reactions the surroundings get hotter.
Answer
Releases energy to the surroundings.
Why not the others: Absorbs energy from the surroundings: this is endothermic; Leaves the temperature unchanged: exothermic reactions warm the surroundings; Only happens at high pressure: pressure is not required.
Practise more Physical and Chemical Principles.
Free questions with an explanation for every one, and full timed Jubilee Institute Admission Test mock tests.
More Physical and Chemical Principles questions
- A uniform rod of length 2.0 m and mass 6.0 kg is pivoted at one end. A vertical upward force F is applied at the opposite end to keep the ro…
- An aqueous solution of hydrochloric acid has a pH of 2.0. If 10 mL of this solution is diluted with pure distilled water to a final volume o…
- A car traveling at a constant speed of 20 m/s accelerates uniformly at 2.5 m/s^2 over a straight distance of 100 m. What is the final veloci…
- Which of the following electronic configurations represents a transition metal atom in its ground state according to Hund's rule and the Auf…
- Two point charges of +4.0 microcoulombs and -1.0 microcoulombs are positioned 0.30 m apart along a line in a vacuum. At what point along the…
- When 5.4 g of solid aluminum (molar mass = 27 g/mol) reacts completely with excess iron(III) oxide via the thermite reaction: 2Al + Fe2O3 ->…