Answer:
energy is just we all know that energy is the ability too do work
as given in example below
Explanation:
we move
we walk
draw
we push
we pull
these all thiings called Energyy
Which of the following happens to a material when it goes through a chemical change?
A The substance changes size.
B The substance changes state.
C The substance changes shape.
B The substance changes into a new substance.
The following happens to a material when it goes through a chemical change is the substance changes into a new substance. Thus option D is correct.
What is chemical change?Chemical change is defined as a change of materials into another, new materials with different properties and one or more than one new substance are formed.
Physical change is defined as a type of change in which the form of matter is altered but one substance is not transformed to another substance i.e. new substance is not formed.
Thus, the following happens to a material when it goes through a chemical change is the substance changes into a new substance. Thus option D is correct.
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How many hydrogen atoms in 5 H2O?
[ Select ]
A:3
B:10
C:7
D:5
How many oxygen atoms in 5 H2O?
Select
A:3
B:10
C:7
D:5
How many different types of atoms in 5 H2O?
[ Select ]
A:10
B:3
C:7
D:5
How many total atoms in 5 H2O?
[ Select ]
A:10
B:3
C:5
D:2
5 H2O is a
A: element
B: compound
Answer:
D
B
B not sure sorry
C
Compound
In which of the following examples would you see a chemical change occur?
A. Candle wax melting
B. Lighting a match
C. Salt dissolving in water
D. Water freezing
Answer: i’m pretty sure it’s B
Explanation:
Does stirring a liquid make it cool down faster?
Answer:
Stirring will help cool a hot drink because it speeds up the process of convection by bringing the hottest liquid at the bottom to the top
Explanation:
Answer: No not really, all your doing is moving it around
Explanation:
I tested it
what is the product of a physical or a chemical change?
Answer:
I hope this helps
Explanation: Physical changes do not change a sbstances identity, it can consist of changes in color, size, etc.
Chemical changes on the completley changes the chemical makeup of a substance. Chemical changes can consist of combustion, corrosion, etc.
please answer this question quickly
Answer:
The right would be rusting. not sure what the left would be
Explanation:
A person throws a ball up into the air, and the ball falls back toward Earth. At which point would the kinetic energy be the lowest?(1 point)
A)when the ball is at its highest point
B) at a point when the ball is still rising
C)when the ball leaves the person’s hand
D) at a point before the ball hits the ground
When a person throws a ball up into the air, and the ball falls back toward Earth, the kinetic energy will be the lowest when the ball is at its highest point (option A).
Kinetic energy is given by:
[tex] K = \frac{1}{2}mv^{2} [/tex]
Where:
m: is the mass
v: is the velocity
So, the kinetic energy is proportional to the velocity and the mass of the object.
When the person throws the ball up into the air, the ball will move upward to a maximum height and then will move down until it hits the ground.
In the upward motion, the ball's velocity will decrease until it reaches the maximum height, where it will be zero. In the downward motion, the magnitude of the ball's velocity will increase because of the acceleration due to gravity until it reaches the ground.
From the statements:
A) When the ball is at its highest point, the velocity will be zero, so the kinetic energy will be zero.
B) When the ball rises, the velocity decreases, so the kinetic energy will also decrease.
C) When the ball leaves the person's hand, it has an initial velocity that is the highest, so the kinetic energy has at this point, the maximum value.
D) Before the ball hits the ground, the ball's velocity has the same value (in magnitude) as the initial value (when the ball leaves the person's hand), so the kinetic energy will be the highest at this point (like statement C).
Therefore, the kinetic energy will be the lowest when the ball is at its highest point (option A).
Learn more here:
https://brainly.com/question/13275688?referrer=searchResultshttps://brainly.com/question/999862?referrer=searchResultsI hope it helps you!
You decided you want to make spaghetti for supper. You first light the gas stove because you need to cook the meat. When the meat is cooked, you add sauce to it. Then you put a pot of water on the stove to get it boiling. The next step is putting the spaghetti noodles in to boil. Finally, you drain the spaghetti noodles and add the sauce. Which of the following describes the chemical changes happening?
A Cooking the meat and boiling the water are both chemical changes.
B Lighting the stove and cooking the meat are both chemical changes.
C Light the stove with a match and boiling the noodles are both chemical changes.
D Mixing the pasta sauce with the meat and boiling the noodles are both chemical changes.
Answer:
C
Explanation:
Brainliest
I need an answer to how science shape philosophy!
Answer:
Philosophy may be called the "science of sciences" probably in the sense that it is, in effect, the self-awareness of the sciences and the source from which all the sciences draw their world-view and methodological principles, which in the course of centuries have been honed down into concise forms.
Explanation:
Which statement best describes gravity? (3 points)
a. It is the force that repels only very small objects.
b. It is the force that acts between objects with zero mass.
c. It is the force that sometimes acts only on very large objects.
d. It is the force that acts between any two objects in the universe.
Answer:
option d
Explanation:
have a nice day
can someone please help me ill mark brainliest and lots of points please help me someone that likes helping people please help mee thank you
Answer:
1) B and 2) D
Explanation:
when scientists refer to the naked eye, it is referring to the eye without any sort of magnifying device, such as a microscope. Algae blooms can result naturally or by human interference
Medical diagnosis and what are common uses of radioactive elements in health care?
Answer:
nuclear medicine
Explanation:
current flows between the reigons of opposite electrical charge, forming a _________.
Answer:
Lightening bolt
Explanation:
Which element would react faster with oxygen because of the properties it possesses?
Berryllium, Potassium, Neon, Barium
Answer:
Berryllium
Explanation:
its the most reactive (mark brainliest plz)
Berryllium would react faster with oxygen.
information regarding oxygen:
Beryllium refer to the silvery-white metal. It is in soft and contains the less density. Beryllium applied in alloys along with copper or nickel.Also, it should be reached quicker with the oxygen.Find out more information about the oxygen here:
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I am an element that has no luster, brittle, and is a poor conductor of electricity. What element can I be?
Answer: Oxygen
Explanation:
Oxygen is not a good conductor, it is brittle, and has no luster.
Suppose that 273 g of the substances listed displaces 26 mL of water. What is the substance?
Substances:
Zinc=7.13
Silver=10.50
Lead=11.35
Answer: Pretty sure its silver
Explanation:
A student pot acabe of better on a metal rod. Then be placed the other end of the red in a beaker of hot water. The setup for the investigation is shown below
The butter melted in ten minutes. What type of energy did the metal rod conduct to the butter?
electrical
chemical
thermal
mechanical
If it rained, what would be the deepest layer the water would go through?
Answer:
soil
Explanation:
scientific investigation starts with an observation of a natural phenomenon or problem, what observation prompted the family to conduct a scientific investigation? (please need help)
Which lists only metalloids?
arsenic (As), sulfur (S), and polonium
(Po) antimony (Sb), tellurium (Te), and gallium(Ga)
boron (B), germanium (Ge), and tellurium (Te)
polonium (Po), aluminum (Al), and silicon (Si)
Answer:
boron (B) germanium (Ge) and Tellurium (Te)
Explanation:
got it right on edge : )
Which of the following is the best way to explain how baking a cake or frying an egg is a chemical change?
A Both are changing size and shape.
B Heat is changing the texture of both substances.
C Heat is being added to both, causing a phase change.
D The end products of both cannot be reversed to their original forms.
Answer:
I think C if not then B
Explanation:
Heat will change the product and will become a chemical change.
Answer:
D
Explanation:
because you literately cant change it back
to its original form also chemical change means something is permanently
changed so when you bake a cake or fry an egg there is no way possible to change it back
What is the definition of the particle?
A particle is a small piece of anything. If you mean a subatomic particle, that's a body that you can't see because it is so incredibly small, though it does have a miniscule mass and internal structure. These particles are even smaller than atoms. You can also say a crumb or speck of something is a particle.
Buying fruit and vegetables needs to be done more often as these types of foods can quickly go rotten. What could you do to slow down the chemical change of fruits and vegetables rotting? Give a reason to support your answer.
The process used to slow down the chemical change of fruits and vegetables is refrigeration.
What is refrigeration?Refrigeration is defined as the process of removing heat from an enclosed space and surface for the purpose of lowering the temperature.
It can also be defined as removal of unwanted heat from the selected object, substances or space and its transferred to another object or substance.
Keeping the fruits and vegetables in refrigerator will help to slow the growth of bacteria and slow down the rotting of fruits and vegetables.
Thus, the process used to slow down the chemical change of fruits and vegetables is refrigeration.
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which of these atoms are electrically neutral?
Atoms are electrically neutral because they contain equal quantities of positively charged protons and negatively charged electrons. Electrons and protons have equal but opposite charges, so the result is no net charge. Ions are atoms that have gained or lost electrons.
Answer:
the blue
Explanation:
if an atom contains equal numbers of protons and electrons, the atom is described as being electrically neutral.
Eriq, a chemist, is running tests with four unknown elements. He has found that they all bond the same way, so he knows that they are in the same group on the periodic table of elements. The table shows other properties that Eriq observed.
A 4-column table with 4 rows titled properties of four unknown elements. The first column titled element number has entries 1, 2, 3, 4. The second column titled melting point has entries 266 K, 172 K, 387 K, 53 K. The third column titled boiling point has entries 332 K, 239 K, 457 K, 85 K. The fourth column titled phase at room temperature has entries liquid, gas, solid, gas.
These four elements are most likely in group
15.
16.
17.
18.
Answer:17
Explanation:
i agree
Buying fruit and vegetables needs to be done more often as these types of foods can quickly go rotten. What could you do to slow down the chemical change of fruits and vegetables rotting? Give a reason to support your answer.
Answer:
putting them in the fredge while in a plastic container
Explanation:
my reason is the cools down / kinda freeze the chemicals so it slows down
An image of a cue ball striking the surface of a pool table is shown. All of the following describe the acceleration of the cue ball EXCEPT-
A. the ball changed direction when it hit the side of the table.
B. the ball traveled at 30 cm/s while it was moving.
C. the ball was at rest until it was struck by the pool cue.
D. the ball eventually came to a stop due to friction.
The acceleration of the cue ball is not described by the ball traveling at 30 cm/s while it was moving. Therefore, option (B) is correct.
What is acceleration?Acceleration can be described as the change of velocity of an object with respect to time. The acceleration is a vector quantity as it possesses both magnitude and direction. Acceleration is calculated as the second derivative of position w.r.t. time as well as the first derivative of velocity of an object w.r.t. time.
The force is the product of the mass and acceleration of an object according to Newton's second law of motion,
F = ma
And, a = F/m
Therefore, the acceleration of a moving object is inversely proportional to its mass.
As the cue ball hit the pool table its direction changed so it defines acceleration as acceleration is a vector quantity. The cue ball eventually stops due to friction.
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Which statements are true?
All landforms have the same combinations of elevation and relief.
Different landforms have different combinations of elevation and relief.
Elevation is the height of a feature above sea level.
Relief is the height of a feature below sea level.
Relief is the difference between the highest and lowest points in an area.
I’ve been stumped on this, can someone please help? Thanks!
Answer:
Adapt, growth, and reproduction
Explanation:
would be some but that's all i know i think sorry :(
Answer:
Properties of Life. All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.
Explanation:
hope this help also brainlest maybe?
10 points Explain the Lunar Eclipse in 4-5 (PLEASE DON'T LOOK IT UP THAT'S PLAGIARIZING
Answer:
use code sypherpk
Explanation:
