1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Irina-Kira [14]
3 years ago
5

Define the following terms:

Chemistry
1 answer:
Marrrta [24]3 years ago
8 0

Answer:

a)An endothermic reaction is any chemical reaction that absorbs heat from its environment. The absorbed energy provides the activation energy for the reaction to occur eg Melting of ice, Evaporating liquid water

   b)An Exothermic reaction is a chemical reaction that involves the release of energy in the form of heat or light.eg a spark, flame, or flash), electricity , a battery), or sound , explosion heard when burning hydrogen).

c)By definition an exothermic reaction produces heat as part of it’s process. The heat generated just by being alive is an exothermic process as well. And as such we become aware of when we feel “too cold” or “too hot” and try to either adjust to the conditions we are in, or minimize them, if possible. It is not merely odd, but contrary to intelligent living, that we choose to increase our discomfort and also risk our health by intentionally increasing not only the exothermic reactions we use but also maximize them to our own detriment. In short, the increased use of inefficient exothermic reactions while inexpensive in current evaluations of financial cost are extremely expensive in terms of it’s effect upon living things, including ourselves. It is as though we are choosing our homes to not only be next to a furnace, but as close as possible to the process.

b8

a) it is important to know chemical properties and compounds.] [Chemistry helps our industry produce more materials—such as paints, plastics, iron or steel, cement, kerosene, and also motor oil. Chemistry also helps farmers to enrich the soil with chemicals ... to grow fresh vegetables.]

b)u asked 4 2 l'll give u ten

The 10 Most Important Lab Safety Rules

   The Most Important Lab Safety Rule. ...

   Know the Location of Safety Equipment. ...

   Dress for the Lab. ...

   Don't Eat or Drink in the Laboratory. ...

   Don't Taste or Sniff Chemicals. ...

   Don't Play Mad Scientist in the Laboratory. ...

   Dispose of Lab Waste Properly. ...

   Know What to Do With Lab Accidents.

You might be interested in
Is wood a homogeneous or heterogeneous mixture?
klio [65]
Wood is a Heterogeneous Mixture.

Hope this helps
5 0
3 years ago
Someone plz help me
a_sh-v [17]

Answer:

A experimental investigation

3 0
2 years ago
What part of an atom is involved in a chemical reaction?
Katyanochek1 [597]

Answer:

The answer is supposed to be "Electron cloud" or "Electon".

5 0
3 years ago
Which properties cause chemical reactions? Question options: chemical properties physical properties chemical and physical prope
zhuklara [117]
Chemical properties cause chemical reactions
4 0
3 years ago
Read 2 more answers
During reduction, which of the following is true? A. Electrons are gained, so the oxidation number increases. B. Electrons are g
Pani-rosa [81]

Answer:

B. Electrons are gained, so the oxidation number decreases.

Explanation:

Reduction is the <em>gain of electrons</em>.

Oxidation number is the charge that an atom <em>appears</em> to have when we count its electrons in a specific way.

Electrons have a negative charge so, if an atom gains electrons, its charge (oxidation number) becomes more negative. The oxidation number decreases.

If electrons are given off, the atom is being oxidized. Loss of electrons is <em>oxidation</em>.

6 0
3 years ago
Other questions:
  • How many moles of oxygen are required to completely react with 27.4 mol of H2
    9·1 answer
  • The heaviest known noble gas metal is radon, atomic number 86. part a find the atomic numbers of the as yet undiscovered next tw
    9·1 answer
  • Describe what you would do to prepare 100.0g of a 3.5% solution of ammonium sulfate in water.
    14·1 answer
  • What did Irene Joliot-Curie earn a Nobel Prize for?
    9·1 answer
  • A longer growing season is a result of
    10·2 answers
  • In a study of the following reaction at 1200 K it was observed that when the equilibrium partial pressure of water vapor is 15.0
    8·1 answer
  • At what temperature will water change from a liquid to a solid?
    13·2 answers
  • Need the following questions answered please and thank you
    14·1 answer
  • Which type of chemistry studies the chemical reactions that occur in the human body?
    10·1 answer
  • 6 The half-life of carbon-14 is 5,700 years. A sample of wood that originally contained 100 grams of carbon-14 now contains only
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!