G10C-sem2-review pack-part 2

The reaction 2HgO(s) --> 2Hg(l) + O2(g) is a(n)

• a. single-replacement reaction.

• b. ionic reaction.

• c. synthesis reaction.

• d. decomposition reaction.

11. The reaction Pb(NO3)2(aq) + 2KI(aq) --> PbI2(s) + 2KNO3(aq) is a

• a. double-replacement reaction.

• b. decomposition reaction.

• c. synthesis reaction.

• d. combustion reaction.

The reaction 2KClO3(s) --> 2KCl(s) + 3O2(g) is a(n)

• a. synthesis reaction.

• b. combustion reaction.

• c. decomposition reaction.

• d. ionic reaction.

1. What is the kinetic energy of a 2 Kg ball that is rolling at a velocity of 2 m/s?

• a. 4

• b. 8

• c. 20

• d. 2.8

What is the Kinetic Energy of a 150 kg object that is moving with a speed of 15 m/s?

• 16875J

• 2000 J

• 2090 J

• 1789 J

An object has a kinetic energy of 25 J and a mass of 34 kg , how fast is the object moving?

• 3 m/s

• 4.2 m/s

• 1.21 m/s

• 3.5 m/s

An object moving with a speed of 35 m/s and has a kinetic energy of 1500 J, what is the mass of the object?

• 9 Kg

• 10 Kg

• 2.45 Kg

• 3.2 Kg

What is the Kinetic Energy of a 100 kg object that is moving with a speed of 12.5 m/s?

• 7812.5 J

• 8745.7 J

• 3890 J

• 2378.5 J

What happens to the speed of the particles if the temperature goes up?

• Particles move slower

• Particles move faster

• Particles are not affected by temperature

• Temperature affects the particle size not the speed.

The energy due to position is called_________

• Kinetic energy

• Work

• Potential energy

• Temperature