Author Question: The first fuels were plant materials. Indicate whether the statement is true or ... (Read 164 times)

sjones

  • Hero Member
  • *****
  • Posts: 520
The first fuels were plant materials.
 
  Indicate whether the statement is true or false

Question 2

Of the following, only ________ is a chemical reaction.
 
  A) melting of lead
  B) dissolving sugar in water
  C) tarnishing of silver
  D) crushing of stone
  E) dropping a penny into a glass of water


kthug

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

TRUE

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

For a complete list of videos, visit our video library