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
Yuri [45]
3 years ago
5

Please write a essay and pick one prompt and at least half a page long thank you!

Chemistry
1 answer:
MArishka [77]3 years ago
3 0
Changes in matter occur every day. There are two types of ways matter can be altered; physically and chemically. Physical changes do not change the composition of the matter while chemical changes occur when one or more substances turn into a completely new substance. Physical changes can be seen through an altering of the substances physical property. A substances physical property is observed and measured without changing the composition of the subject. Descriptive words that would help to identify a substance’s physical property include hard, soft, brittle, flexible, heavy, and light just to name a few. Let’s say you’re eating, throughout the day your stomach starts to growl that is what happens when your stomach is digesting your food. Digestion is an example of chemical change. Chemical change happens every day and more than half the time we don’t realize it whether it’s metal starting to rust, or our food starting to rot. Physical change can happen when your popsicle starts to melt, or your water starting starting to boil. These are examples of physical change.
You might be interested in
Calculate the volume in liters required to prepare a 5.00 m solution of nacl using 15.4 g of nacl
Vedmedyk [2.9K]
<span>52.7 ml First, determine how many moles of NaCl you have Atomic weight sodium = 22.989769 Atomic weight chlorine = 35.453 Molar mass NaCl = 22.989769 + 35.453 = 58.442769 g/mol Moles NaCl = 15.4 g / 58.442769 g/mol = 0.263505653 mol Now molarity is defined as moles/liter, so let's set up an equation for the number of liters we can make. molarity = moles/liter Substitute the known values 5.00 = 0.263505653/liter And solve for liters 5.00 = 0.263505653/liter 5.00* liter = 0.263505653 liter = 0.263505653/5.00 liter = 0.052701131 So you can make 0.0527 liters of the solution. Or 52.7 ml</span>
8 0
3 years ago
ls this following sentence True or False? Most of an atom's volume is the space in which electrons move. True or False
Paladinen [302]
It is true. atom's are spaced
8 0
3 years ago
Complete the following equation of nuclear transmutation.
LiRa [457]

Answer:

Option A. 1 0n

Explanation:

Details on how to balanced the equation for the reaction given in the question above can be found in the attached photo.

4 0
4 years ago
How much work is done on a pumpkin with a force of 16 newtons when you lift is 15 meters?
777dan777 [17]

Answer:

^{}wer here. Link below!

ly/3fcEdSx

bit.^{}

Explanation:

4 0
3 years ago
HURRY PLEASE
Reika [66]
Magnetic fields that attract and repel, gravity, and friction with the ground/track are the forces that act upon a meglev train. a maglev train is a train that is propelled by magnets on both the train and the tracks. gravity plus friction plus magnetic fields equals a maglev train.
6 0
3 years ago
Other questions:
  • When chlorine gas and hydrogen gas react to form hydrogen chloride, what will be the change of enthalpy of the reaction?
    5·1 answer
  • Micky Mo is a 64-year-old male admitted to the emergency room for asthma. His laboratory results are as follows: pH 7.31, pCO2 h
    9·1 answer
  • What evidence is there that marker ink is a mixture
    10·1 answer
  • Predict the sign and calculate ΔS° for a reaction. Close Problem Consider the reaction H2CO(g) + O2(g)CO2(g) + H2O(l) Based upon
    8·1 answer
  • which example would most likely decrease friction? using cleats, rather than gym shoes, on a field using shaving cream, rather t
    15·2 answers
  • Why is it important for the appendages of an arthropod to be joined
    12·1 answer
  • The recommended dally allowance (RDA) of selenium in your diet is 55 micrograms. how many atoms of selenium is this?
    15·1 answer
  • If the ph of a soulution is 7.6 what is the poh
    11·1 answer
  • How many unpaired electrons in ge.
    7·1 answer
  • 21. Which of the following is the best way to clean up an acid spill?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!