CHEMISTRY HIGH SCHOOL

Examples of chemical changes in nature

Answers

Answer 1
Answer: rusting of ironcombustion (burning) of woodmetabolism of food in the bodymixing an acid and a base, such as hydrochloric acid (HCl) andsodium hydroxide (NaOH)cooking an eggdigesting sugar with the amylase in salivamixing baking soda and vinegar to produce carbon dioxide gasbaking a cakeelectroplating a metalusing a chemical batteryexplosion of fireworksrotting bananasgrilling a hamburgermilk going sour
Answer 2
Answer: when a tree starts to rot

Related Questions

Which of the following solids has the highest melting point?(1) H2O(s) (3) SO2(s)(2) Na2O(s) (4) CO2(s)
HELP UNDERSTAND, PLEASE! In a reaction, 15 moles of carbon dioxide are produced from 5 moles of iron (III) oxide and 15 moles of carbon monoxide. What is the mole ratio of carbon dioxide to carbon monoxide?15:55:151:31:1
What is the very small center core of an atom is called?
bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of –7.2°C. Bromine can be classified as a
During radioactive decay, atomic nuclei of unstable isotopes: give off nuclear radiation

List three of Rutherford’s major achievements that helped earn him the title “Father of Nuclear Physics.”

Answers

The correct answer is:

discovered the necleusproposed the proton existencediscovered fusion reaction from fission

Explanation:

Rutherford (1871–1937) was subject for an extraordinary array of discoveries in the fields of radioactivity and nuclear physics. He identified alpha and beta rays, set forth the rules of radioactive decay, and recognized alpha particles as helium nuclei.In 1911, Rutherford realized that atoms not detached, they are managed by something else, a nucleus. He noticed that the preponderance of an atom's mass is contemplated at a very tiny point in the center where the nucleus was determined. The nucleus is a positive force enclosed by electrons which are negative free flying particles.
discovered the necleus
proposed the proton existence
discovered fusion reaction from fission

The best method to improve air quality is to

Answers

Stop littering and polluting
Hi There!

The best method to improve air quality? I'm going to do indoor. :P

•Circulate, Circulate

•Renovate Wisely

•Filter Refresher

•Common Scents

•Clean 

Which of these following have a positive charges

Answers

Talking about ions, a cation has a positive charge. That means a positive charge is gained by an atom that gives out electrons. 

Which of the following best describes a mixture in which ionic compounds are dissociated in solution? a. ion solution
b. aqueous solution
c. hydraulic solution
d. hydrochloric solution

Answers

A.) Ion solution....

Two chemical properties associated with Bromine

Answers

2 Chemical properties of Bromine (Br):

Melting point: -7.2 degrees Celsius

Boiling Point: 58.8 degrees Celsius
Melting point and Boiling Point

In the past, investigators would look at which two types of cues when trying to determine if someone was lying? Biased and unbiased


Verbal and non-verbal


Quiet and loud


Simple and complex

Answers

Answer : Verbal and non-verbal communication wad used by Investigators in the past when trying to determine if someone was lying.

Explanation: In the Verbal communication information is transferred from one person to other by speaking.

Non-verbal communication includes Facial expressions , eye contact , body language, eyes blinking etc.

If someone is lying he or she will easily dermined by applying above things.
Verbal and nonverbal.

They would look for shakiness of the voice (verbal) or darting eyes (nonverbal), and other things to that same effect.
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Explain the four quantum numbers
A graduate student working toward a PhD in Chemistry discovers an efficient, powerful redox reaction involving an uncommon combination of chemicals. In order to show other chemists the voltage generated by the reaction, the student would most likely record information in
1.34 milligrams is the same as _____ kg and _____g. here are some answers you can pick from for Kg the choices below are the same for G A. 13.4 B. 0.0134 C. 0.00000134