Question

The rate of a reaction increases as the temperature__________________. A. decreases B. increasesC. stays the same
2. Fast reactions have _______________ activation energy than slow reactions. A. lower B. greater C. the Same
3. The collision theory states that for a reaction to occur:
A. the particles of the reactants must collide with sufficient energy
B. the particles of the reactants must collide in the correct orientation
C. Both A and B are correct
4. The minimum energy needed to start a chemical reaction is called:
A. Kinetic energy B. Activation energy C. none

Answer 1

Answer:

1) B. increases

2) B. greater

3) C. Both A and B are correct

4) Activation energy

Explanation:

The rate of a chemical reaction is depend on temperature. If temperature increases, the chemical reaction also increases and vice versa. Fast reaction means which is completely in less time. So atoms in fast reaction have great activation energy and slow reaction have less activation energy. Collision occurs when the particles have energy to move and they collide in proper direction.