Answer:
The chemical property of combustion.
Explanation:
Combustion is a chemical reaction that occurs between a combustible material, a substance that causes or favors the combustion of other substances that is oxidizer and oxygen, all this accompanied by outgoing energy in the form of heat (exothermic energy) and incandescent energy.
In this case, wood is the combustible material, and combustion is generated by separate energy, fire, phosphors, sparks.
A Synthesis Reaction is
when energy
O is released in the form of heat
O when energy is released in the form of ice
O No answer text provided.
O No answer text provided.
Answer:
O is released in the form of heat
Explanation:
A Synthesis Reaction is when energy is released in the form of heat and light. The synthesis reaction is exothermic. Hence, first option is the correct answer.
What is a reactivity ceris
Answer:
Hi, There! Your Answer Is Below!
A reactivity series is used to rank the chemical reactivity of a group of metals from most reactive to least reactive.
Explanation:
The reactivity series is a series of metal elements, and sometimes carbon and hydrogen, that is arranged according to their reactivity. A reactivity series is typically a vertically presented model with the most-reactive element placed at the top of the series and the least-reactive element placed at the bottom.
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Answer:
Explanation:
Independent variable is the water dependent variable is the coconut water control group is the half sprayed with water the conclusion is coconut water does not work
are useful in science because they provide a way
to investigate things that are too small, large, complex, or distant
to observe or investigate directly.
Answer:
Models
Explanation:
Which chemical element hates to be a follower?
Answer:
look up hope that helps you
Water molecules are polar covalent molecules. There is a partial negative charge near the oxygen atom and partial positive charges near the hydrogen atoms due to the uneven distribution of electrons between the atoms, which results in the formation of hydrogen bonds between water molecules. The polarity of water molecules contributes to many properties of water that are important for biological pro
Answer:
The water molecule, as a whole, has 10 protons and 10 electrons, so it is neutral. ... The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
Explanation:
Water molecules are polar molecules, they have a partially positive end and a partially negative end.
Water contains hydrogen and oxygen. The hydrogen and oxygen in water are combined in a ratio of 2:1.
However, oxygen is far more electronegative than hydrogen hence the compound is polar. The dipole in the molecule points towards the oxygen atom which bears the partial negative charge. Hydrogen bears the partial positive charge.
This polarity of water enables extensive intermolecular hydrogen bonding between water molecules. Properties such as high melting and boiling point of water owes to extensive intermolecular hydrogen bonding in water molecules. Indeed, all the physical properties of water are linked to polarity and hydrogen bonding.
Also, this polarity makes water molecule an excellent solvent for many substance especially in biological systems where it functions as the medium for many biochemical reactions.
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Are the atoms of gold and carbon always moving or always motionless?
always moving
Or
always motionless
(My losing emote at the top..)
What is the charge on a neutron?
A. neutral
B. positive
C. negative
Answer:
neutral charge
I hope it's helps you
Answer:
A. Neutral
Explanation:
Formular of a neutron:
[tex]{ \sf{ {}^{1} _{0}n}}[/tex]
hence, it shows that a neutron has zero charge
Theories change because new technology improves our ability to observe the natural world.
O True
O False
Answer:
True
Theories change because new technology improves our ability to observe the natural world. answer choices.
some solve it but i want exact
answe
Answer:
S = 32.653061%
0⁴ = 65.3061%
Explanation:
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Which of these is a special property of water? select all that apply
water has a high surface tension
none
water expands when it freezes
water molecules can stick together
Answer:
Water has high surface tension, and water molecules stick together
Explanation:
Answer: C and D
Explanation: Please give brainlyest
What happens when chalk powder and sand are added to water give reasons
Answer:
Look in explanation:
Explanation:
Chalk is composed of Ca(CO3).
This will not dissolve in H2O because the ionic bonds between the calcium and carbonate are too powerful to be disrupted by water so it will have no effect.
No reaction takes place when sand is mixed with water and the sand would just sink down.
how to overcome overshot in tritation
Answer:
The method involves students exhaling air using a plastic straw into the over-titrated acid-base mixture, which turned pink-colored with phenolphthalein indicator.
3x-12=0
what is the value of x
Answer:
[tex]3x - 12 = 0 \\ 3x = 12 \\ x = 12 \div 3 \\ x = 4 \\ thank \: you[/tex]
Answer:x=4
Explanation:
3x-12+12=0+12
3x=12
3x/3=12/3
x=4
what will happen to the atoms or molecules of a substance when it boils
Answer: It will change to gas
Explanation: It will change to gas because of evaporation. When the heat intensifies it will happen.
help me please quick!
TIME REMAINING
01:50:03
The independent variable is the only factor that a scientist
O varies for different groups in an experiment.
O measures in an experiment
O keeps constant for each group in an experiment.
O records throughout an experiment.
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Mark this and return
Answer:
measures in an experiment
The independent variable is also defined as the regressors or controlled variable. It is the variable which is thought to be the cause of some effect. The independent variable is the only factor that a scientist varies for different groups in an experiment. The correct option is A.
An independent variable is defined as the variable which is changed or controlled in a scientific experiment in order to study the effects on the dependent variables. It is known as the quantity which is being manipulated in an experiment.
Thus independent variable is option A.
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fats that come from animlas
saturated fats are are mainlyderived from animals eg butter and lard and they are solid at room temperature
Please help!
The answer should be in g/mL
Answer 0.656378
Explanation: Its math
Answer is needed fast
Answer:
Shortest distance between 2 points is called displacemen.
Explanation:
This is because displacement means the distance between 2 points or really the negative distance.
Answer:
acceleration goes on increasing during uniform motio
this is wrong
Explanation:
Because during uniform motion acceleration is always zero .
Do you agree with the law that requires a table of nutrition facts to be published on food labels? Explain your reasoning
Answer: Yes,
Explanation: Yes, because people should know what there eating, for multiple reasons. If someone was allergic to to something in it and did not know but ate it, it would not be good. Also someone being on a diet and is avoiding certain fats should know.
(If you use this I recommend you use a Paraphrasing Tool, because I've seen people get busted for having exact same words)
How we can find block of any element in the periodic table ❓❓
Answer: If the element is in the p block, then the number of the group can be determined by the formula: (number of valence electrons + 10). 3. If the element is in the d block, then the number of the group can be determined by the formula: numberofelectronsin(n−1)dsubshell + (number of electrons in (n) s subshell).
1. Why does Owelle disapprove of the Bohr model?
Answer:
The main problem with Bohr's model is that it works very well for atoms with only one electron, like H or He+, but not at all for multi-electron atoms
Explanation:
Owelle disapprove of the Bohr model because it was primarily for the hydrogen atoms. It couldn't elaborate on spectra of multi-electron atoms.
What are electrons?An electron is a negatively charged subatomic particle.
The main problem with Bohr's model is that it works very well for atoms with only one electron, like H or [tex]He^+[/tex], but not at all for multi-electron atoms
Hence, Owelle disapproves of the Bohr model.
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14. Donna can lift 25 kilograms. How many grams can she lift?
Answer:
25,000g
Explanation:
1kg is 1000g, 25*1000 = 25,000
A 2.00 mL sample of a substance A has a density of 18.4 g/mL and a 5.00 mL sample of
substance B has a density of 35.5 g/mL. Do you have an equal mass of substances A and
B? Explain your answer.
Answer: No, the samples are not of equal masses.
Explanation: Mass is volume X density
A: (2ml)*(18.4g/ml) = 36.8 g
B: (5ml(*(35.5g/ml) = 177.5 g
A scientist is studying the impact of a new manufacturing plant on the local ocean ecosystem. How could she best monitor the impact of the manufacturing plant on populations in this ecosystem?
Answer:
A. Wild life survey
Explanation:
The only answer that involved observing the wild life
What makes us human?
Answer:
Human beings are anatomically similar and related to the great apes but are distinguished by a more highly developed brain and a resultant capacity for articulate speech and abstract reasoning.
Explanation:
What does the table indicate regarding the theory of the atom?
The table shows that the theory of the atomic structure changes as more evidences emerge.
Science is empirical in nature. The theories in science are based on weighty evidences.
Atomic theory began from the thinking of philosophers in ancient Greece. As time went on, the theories regarding the atom become a subject of empirical investigation.
Evidences were amassed regarding the structure of the atom leading to a successive paradigm shifts as new evidences emerge.
The table shown tells us that theories atomic structure changed over the years as new evidences emerged from the experiments of scientists.
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How do you estimate the density of an object without measuring its mass or volume?
How do I solve this?
Answer:
C
Explanation:
Particles inside the nucleus = protons + neutrons = mass number = 84
particles outside = electrons number = atomic number
