Question

Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions?
The molecules move more quickly in the sawdust than in the block of wood.
The pressure of oxygen is greater on the sawdust.
More molecules in the sawdust can collide with oxygen molecules.
Oxygen is more concentrated near the sawdust than the block of wood.

Answer 1

Answer:

a.The molecules move more quickly in the sawdust than in the block of wood.

b.The pressure of oxygen is greater on the sawdust.

c.More molecules in the sawdust can collide with oxygen molecules.

d.Oxygen is more concentrated near the sawdust than the block of wood.