The picture shows a spoonful of salt being added to a glass of water. What physical property of the salt is being demonstrated?A.
A.
solubility
B.
density
C.
boiling point
D.
melting point
Answers
Related Questions
How does this evidence help explain why the skin cancer rate is higher in Australia than in Brazil, even though the two countries get the same amount of sunlight?
Answers
Answer:
The Ozone layer
Explanation:
Ozone in the atmosphere can absorb ultraviolet light, which stops the light from reaching Earth’s surface, so people absorb less of it. Australia has less ozone than other places, like Brazil, and this is why Australia gets more ultraviolet light.
In an exothermic reaction, chemical energy is converted to _____.
1.thermal
2. mechanical
Answers
Because exothermic is having to do with energy
The chemical reactions are generally of many types. The exothermic and endothermic reactions are important among them. In an exothermic reaction the chemical energy is converted to thermal energy. The correct option is 1.
What is exothermic reaction?The chemical reactions which proceed with the evolution of heat energy are defined as the exothermic reactions. The chemical reactions which proceed with the absorption of heat energy are called endothermic reactions.
In an exothermic reaction, system loses heat to surroundings. Since heat is given out in exothermic reactions, the enthalpy of the products will be less than that of the reactants.
In exothermic reaction, q will be negative and the enthalpy change will be also negative. In this reaction chemical bonds are broken and new bonds are formed. The chemical energy is converted to kinetic energy which is released as heat.
Thus exothermic reaction releases thermal energy.
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How does melanin provide protection against skin cancer? use absorb
energy
light in your sentece
Answers
The melanin provides protection against skin cancer by absorbing harmful UV light from the electromagnetic spectrum.
What is electromagnetic spectrum?
The electromagnetic spectrum consists of radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.
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a
a decrease in the number of zebra mussels along the waterways
b
an increase in the number of zebra mussels along the waterways
c
no effect because more time is needed to determine an outcome
d
no change in the number of zebra mussels infecting the waterways
Answers
what am i supposed to write here?
Answers
Answer:
I think u are supposted to find out the are the missing things
Explanation:
Match the following items with the correct descriptions.
1. releases hydrogen ions
base
2. accepts hydrogen ions
eight
3. poor conductor of electricity
metal
4. shiny and lustrous
nonmetal
5. maximum number of electrons in first shell
acid
6. maximum number of electrons in second shell
two
Answers
Answer:
1.releases hydrogen ion acid
2.accepts hydrogen ion base
3. poor conductor of electricity non metal
4. shiny and lustrous metal
5. maximum number of electrons in first shell
two
6. maximum number of electrons in second shell
eight
Stephen pours a glass of ice water. He gets a phone call before he can drink it. What will happen if he leaves the glass on the counter for 2 hours?
a heat will transfer from the water to the ice until both reach the same temperature
b heat will transfer from the water to the ice until the water is colder than the ice
c heat will transfer from the ice to the water and the ice will stay colder than the
water.
d heat will transfer from the ice to the water and the ice will get warmer than water
Answers
Answer:
d im pretty sure
Explanation:
Which of the following would not be restricted (limited) by low levels of ATP?
Answers
how the remains of plants and animals become fossil fuels. why are they considered nonrenewable resources
Answers
Answer:
It takes a very long time for things to become fossil fuel. Hence why it’s called non-renewable
Explanation:
Is this a scientific model? Use complete sentences to explain why or why not
Public Domain
Answers
Answer:
it is
Explanation:
What are examples of pollution that can be caused by agriculture?
Answers
Answer:
Nitrate from agriculture is now the most common chemical contaminant in the world’s groundwater aquifers. Aquatic ecosystems are affected by agricultural pollution; for example, eutrophication caused by the accumulation of nutrients in lakes and coastal waters impacts biodiversity and fisheries.
Answer: Agricultural Pollution is a waste or discharge resulting from farming that degrades or contaminates the surrounding environment. This pollutions comes from several sources and has adverse effects on many different types of organisms. The impact of this pollution can be reduced through certain practices. Causes are:
Explanation:
Pesticides and Fertilizers. To begin with, the earliest source of pollution has been pesticides and fertilizers. ...
Contaminated Water. ...
Soil Erosion and Sedimentation. ...
Livestock. ...
Pests and Weeds. ...
Heavy Metals. ...
Soil Erosion and Sedimentation. ...
Organic Contaminants.
When the Moon passes between Earth and the Sun, covering all or part of the Sun; occurs when the Sun, the Moon, and Earth directly line up usually lasts for less than 12 minutes.
1. Seasons
2. Solar Eclipse
3. Lunar Eclipse
4. Moon Phases
Answers
Answer: solar eclipse
Explanation:the moon covers the earth and the sun covers the moon
Solar Eclipse
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Answers
15)chlorine displaces bromine from potassium bromide
16) non-metals
6)vertical
7)similar properties
8)there are patterns
10)decrease
11)very reactive
12) hydrogen
18)lower density than air
19)better insulator
20)metalloids
Answer:
a b a
Explanation:
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A cube has a mass of 25g and a volume of 5cm3, what is its density?
Answers
Density = 25 / 5
Density = 5 g/cm3
what is found in the molecule dna?
Answers
Answer:
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Explanation:
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Answers
Answer:i cant seee
Explanation:
none
Earth’s surface is constantly changed by erosion and deposition. Erosion breaks down Earth’s surface by carrying materials away from an area. Deposition builds up Earth’s surface when these materials are deposited in an area over time.
Which landform results when erosion occurs during volcanic eruptions, but deposition does not directly contribute to creating the landform?
volcanic soil
cinder cone
caldera
lava plateau
Answers
Answer:
Caldera
Explanation:
C
The landform results when erosion occurs during volcanic eruptions, but deposition does not directly contribute to creating the landform is caldera.
Where does the operation take place?Involving the wear, transport and deposition of soils and rock particles. Erosion is the process of wear, transport and sedimentation of soil, subsoils and rocks as an effect of the action of erosive agents, such as water, wind and living beings.
In this case the caldera is landform results when erosion occurs during volcanic eruptions, but deposition does not directly contribute to creating the landform.
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What happens to the motion of an object if forces acting on the object are equal and balanced?
A. The object begins to move
B. The object begins to slow down
C. The motion of the object does not change
Answers
Answer:
When the forces acting on an object have equal strength and act in opposite directions, they are balanced. These forces cancel out one another, and the motion of the object they are acting on remains unchanged. The object may change its speed (speed up or slow down), or it may change its direction.
So I think its C
You see this is because if the forces were different the object would either speed up or slow down but in this case the forces are equal so the motion of the object does not change.
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Describe the percentages of electromagnetic energy that comes from the sun?
Answers
I hope this is what you were asking.
Can yall please help me with this
Answers
Answer:
option D
Explanation:
option D is the correct answer.
mechanical energy = kinetic energy + potential energy
mechanical energy = 40+ 60 = 100 joules .
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Which of the following statements is true?
Protons and electrons are found in the nucleus.
Atomic weight and atomic mass are the same.
Isotopes have different numbers of electrons.
Weight depends on the amount of gravity.
Answers
Answer: Atoms that have the same number of peg holes may have similar chemical Although a proton has more mass than an electron, they both have the same amount of stability of the nucleus, and hence the atom's radioactivity,
Explanation:
Answer:
weight depends on the amount of gravity
Explanation:
an objects weight depends on it's mass and the strength of the gravitational pull.
What patterns in the rock layer fossils helped you identify an extinction?
Answers
Which set of diagrams shows a balanced chemical equation?
A: 2 H, 2 O, 2 S and 2 H, 2 O, 3 S. B: 4 H, 2 O, 3 S and 4 H, 2 O, and 1 S. C: 4 H, 2 O, 2 S and 4 H, 2 O, 2 S. D: 2 H, 2 O, 2 S and 1 H, 1 O, 1 S.
A. Diagram A
B. Diagram B
C. Diagram C
D. Diagram D
Answers
Hope this helped
Why is it necessary to see a similar pattern of change in fossils from several places in order to conclude that an extinction happened?
Answers
One can learn a lot about the history of life on Earth thanks to fossils. They can help us understand the origins of life and humanity, the evolution of the planet and its environment across time, and the once-connected nature of the continents that are now widely separated.
What are fossils ?Any surviving remnants, impression, or evidence of a once-living creature from a previous geological epoch is referred to as a fossil. Examples include fossilized bones, shells, exoskeletons, animal or microbe impressions in stone, amber-preserved artifacts, hair, petrified wood, oil, coal, and DNA traces.
Scientists use the fossil record to seek for patterns that may be used to infer which creatures are related to one another, how groups of organisms evolved through time, and how the Earth's climate affected the kinds of plants and animals that could survive for a very long time.
Thus, a lot about the history of life on Earth thanks to fossils. They can help us understand the origins of life and humanity.
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How do organisms form carbon films?
Organisms turn into rock.
Residue is left on rocks when organisms decay.
Hollow forms are left in sediment by decaying organisms.
Organisms leave evidence of their activities, such as footprints.
Answers
Answer:
hollows forms are left in sediment by decaying organisms
Answer:
The answer is C. I just did the quiz and got 90%, but this is not the one I got wrong. Hope this helps!
Explanation:
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Answers
Answer:
b d a
Explanation:
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7-b
8- b
9-b
10-a
11-b
Thomas thinks that acceleration means “speeding up.” Explain why this is incorrect.
Answers
Answer:
Explanation:
Thomas is incorrect because acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.
A characteristic property is one that remains the same regardless of the amount of matter that is present.
Which of the following is a characteristic property of matter?
Group of answer choices
Density
Mass
Volume
Weight
Answers
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Answers
label the following as a pure substance or a mixture.
Answers
Answer:
b
Explanation:
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Answer: a mixture
Explanation: