This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Fire was one of the earliest agents that enabled chemical changes. Indicate whether the statement ... (Read 15 times)

Themember4

  • Hero Member
  • *****
  • Posts: 538
on: Aug 27, 2018
Fire was one of the earliest agents that enabled chemical changes.
 
  Indicate whether the statement is true or false

Question 2

A substance which lowers the activation energy of a chemical reaction is called a(n)
 
  A) reducing agent.
  B) catalyst.
  C) oxidizing agent.
  D) carcinogen.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sultana.d

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Aug 27, 2018
Answer to Question 1

TRUE

Answer to Question 2

B


Themember4

  • Member
  • Posts: 538
Reply 2 on: Aug 27, 2018
:D TYSM

miss_1456@hotmail.com

  • Member
  • Posts: 289
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Activation energy of uncatalyzed and catalyzed chemical reactions Activation energy of uncatalyzed and catalyzed chemical reactions
Correct use a fire extinguisher Correct use a fire extinguisher
Testing the Chemical Characteristics of Urine with Reagent Strips Testing the Chemical Characteristics of Urine with Reagent Strips
The chemical synapse. Step 1: The impulse travels down the axon. Step 2: Vesicles are stimulated to ... The chemical synapse. Step 1: The impulse travels down the axon. Step 2: Vesicles are stimulated to ...
Classification of Antihypertensive Agents Classification of Antihypertensive Agents
Basic Chemical Structure of Amino Acids Basic Chemical Structure of Amino Acids
Video: HIV replication/ Replication cycle of HIV

For a complete list of videos, visit our video library