Answer:
Physical change is when change occur physically in a substance. It is usually reversible. It includes change in colour, shape, texture, volume etc.
Examples: Cutting of paper, making moulded stuff from dough etc.
Chemical change is when change occurs chemically in a substance. It is non-reversible. When ever a physical change happens, a new substance if formed.
Examples: Burning of paper, transformation of milk into curd etc.
what can you conclude about chlorine 37 from its name? PLz ANSWER NOT JUST 4POINTS
a)it has an atomic mass of 37 u
b)it has 37 protons
c)it has 37 neutrons
d)it has 37 electrons
Write a summary of the portion of the "Gettysburg Address" by Abraham Lincoln.
What does the chemical formula CaCl2 show about the compound it represents?
It is made up of one element.
It is made up of two elements.
It is made up of three elements.
It is made up of four elements.
Answer:
I WILL RESPOND IN THE COMMENTS WHAT THE ANSWER IS OK!!
Explanation:
I AM GOING TO RESPOND IN THE COMMENTS
Answer:
Why do you have 2 questions, that makes no sense what so ever.
help me pls someone plss???
Answer:
a
Explanation:
I am so sorry I don't know how to explain
Which of the following best describes a scientific model? (3 points)
Something used to represent an idea or process
A way to prove a theory is true
A direct experience in nature
A prediction that can be tested
Answer:
A way to prove a theory is true
Explanation:
I hope this helps
Answer:
A way to prove a theory is true
-hope this the correct answer and if not i hope it at least helped but regardless have a good rest of your day :)
Explanation:
Which of the following genotypes would result in a red phenotype?
Group of answer choices
1. cc
2. c
3. RB
4.Cc, CC
What is the difference in the number of neutrons between an atom of fluorine and an atom of argon?
I need an answer fast PLEASE!
The difference between the number of neutrons between an atom of fluorine and an atom of argon is 12
The number of neutrons is obtained by subtracting the number of protons from the mass number of the atom. We can calculate the number of neutrons in each element given this information
Mass number of fluorine = 19
Atomic number of fluorine = 9
Mass number of Argon = 40
Atomic number of argon = 18
Hence;
Number of neutrons in fluorine = 19 - 9 = 10
Number of neutrons in argon = 40 - 18 = 22
Difference between number of neutrons in argon and number of neutrons in fluorine = 22 - 10 = 12
Learn more: https://brainly.com/question/5803619
Explain the environmental benefits of recycling paper products.
Answer:
:)
Explanation:
Recycling paper helps to reduce greenhouse gas emissions that can contribute to climate change. It takes 70% less energy and water to recycle paper than to create new paper from trees. Manufacturing with recovered paper cuts down on pollution that contributes to smog (and ill health).
Answer:
will help us use less energy. When we just keep filling landfills we take space away for growing trees to benefit our environment
Pls help me do this and I'll give you pts and Brainliest thanks friend and anything!
Hello! Please insert your item as an image and not a document so that I may view it!!
The energy available to secondary consumers in an energy pyramid is 500 kilocalories. Approximately how much energy is used by the secondary consumers for their physical functions?
50 kilocalories
500 kilocalories
400 kilocalories
450 kilocalories
please this is worth 50 points
Can someone please help me with this?
Write your analogy story below
Describe how an electromagnetic wave carries energy from place to place. Your description should include the terms electric field, magnetic field, and perpendicular.
Answer:
hope this is what u want
hope it helps
Answer:
the dude above me helped
Explanation:
THE DUDE ABOVE ME
can someone please help me on this i really need help i will litteraly fail
20 POINTS!!! PLS HELP ME
Answer:
they just add heat, then it turns to water vapor
Explanation:
The first h20 is water the arrow represents adding heat, and the second h20 represent water vapor (water as a gas)
Answer:
Boiling is not a chemical reaction. It is a physical reaction because after being heated up to a boil turning into steam, it eventually cools back down to water. Like evaporation and then rain.
Explanation:
Please answer the question circled in red
(I'll only give brainliest if it's right)
Answer: i agree with alan this is because energy cannot be created nor destroyed only stored and transferred wich mean the soccer ball always has energy
Explanation: hope this helps :)
what is a oganisem
mmmmmmmm
PLS HELP ME IN THIS QUESTION
Answer:
the first one is just water and the second one is gas
Explanation:
pls help with this science homework
These are all the answers. Hope I helped
1. A
2. C
3. A
4. B
Plz help with this digestive system
Answer:
(4) mechanical digestion
(5) chemical digestion
(6) enzymes
(7) pharynx
(8) peristalsis
Answer:
(4) Mechanical digestion
(5) Chemical digestion
(6) Enzymes
(7) pharynx
(8) peristalsis
In your first paragraph, describe general properties of waves. Your description should focus on the relationship between energy, matter, and waves.
Answer:
Properties of Waves. The prime properties of waves are as follows: Amplitude – Wave is an energy transport phenomenon. Amplitude is the height of the wave, usually measured in meters. It is directly related to the amount of energy carried by a wave. Wavelength –
Explanation:
Hope that helped! (can u mark it brainliest?)
Plz help thank you so much!
help me pls someone plss???
c) water vapor is less dense
A wave cycle is
a. the amount of time it takes for a wave pattern to repeat.
b. the total number of waves created by a single disturbance.
c. one complete motion of the repeating pattern in a wave.
d. the total number of S-shapes created by a wave in 60 seconds.
SOMEONE PLS HELP ME WITH THE FIRST QUESTION IN THE BOTTOM.
Answer:
Yes
Explanation:
Water being burnt in a pot of fire results in H20 Gas.
Answer:When you boil water, the heat given off is a sign that chemical bonds are being broken and new ones are being fore broken.
Explanation: false Water boiling is a physical change and not a chemical change, therefore no bonds are broken.
hope this helps
Please help!I'll give some points:))
There are several different models that represent compounds. One type of model is shown.
A large black sphere connected to 4 small blue spheres by 4 grey sticks.
What type of model is shown?
a structural formula
a chemical formula
a space-filling model
a ball-and-stick model
For those looking for the letter its D
Your welcome :)
The representation described in the question is a ball and stick model.
Several kinds of models can be used to represent molecules. Models help us to accurately visualize what the molecule may look like. It shows the actual arrangement of atoms in the molecule in order to help us predict the possible reactions that the molecule may undergo.
A model which consists of spheres connected to each other is a ball and stick model. The spheres are the balls and they are linked to each other by the sticks.
Learn more: https://brainly.com/question/1389682
Use the drop-down menus to answer the questions.
Which feature contains genetic material and is present in a eukaryotic cell but not in a prokaryotic cell?
Which two features are present in a plant cell but not in an animal cell?
Answer:
1. A
2. B and C
Explanation:
got it right in edg (see pic)
Answer:
A B C
Explanation:
person above is right
in your own words answer How Do You Define Geography?
Answer:
the study of physical features of the earth and it's atmosphere, and of human activity as and it is affected by these,including the distribution of population and resources available
Answer:
Explanation:Geography is the study of places and their environments.
How does an increase in altitude affect the climate?
Answer:
As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands) and the temperature decreases. If the humidity is at 100 percent (because it's snowing), the temperature decreases more slowly with height.
Explanation:
Hopes this helps and plz mark me brainliest!
Sketch a simple model that shows why the constellations change over the course of a year.
Answer:
for only five points we will not make sketch n
explain what the purpose of a gene is!!!!
*20*
Answer:
The purpose of genes is to store information. Each gene contains the information required to build specific proteins needed in an organism.
Explanation: