Answer:
the number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge
Explanation:
Hi, If your New to brainly.com Welcome!! I Hope you enjoy your Experince!
If you have Anymore Questions Please Message Me! :)
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.
Learn more: https://brainly.com/question/10904296
David noticed that when he ate chocolates they melted in his hands faster when his hands were slightly wet from sweat than his hands were dry. He was curious to see if other liquids would affect how fast they would melt? He decided to test out four different liquids, water, milk, lemon-lime soda, and orange juice. He then timed how long it took them to melt. He thought the chocolate would melt faster in orange juice that the other liquids because it is more acidic. The results are below.
QUESTIONS:
1) What was David's Question?
2) What was David Hypothesis?
3) What his independent Variable?
4) What his Dependent variable?
Answer:
1. What liquid would melt the chocolate faster?
2. He thought that the orange juice would melt the chocolate faster.
3. The independent variable is the liquids.
4. The dependent variable is the chocolate.
Explanation:
1. He was curious to see if other liquids would affect how fast they would melt? This is his question.
2. He thought the chocolate would melt faster in orange juice than the other liquids because it is more acidic.
He made a prediction or a hypothesis.
3. His independent and dependent variables are chocolate and liquid. Since he wants to know how fast the chocolate melts in different liquids, how fast the chocolate melts is dependent on the liquid that he uses.
PLEASE HELP WITH MARK BRAINLIEST !!
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 is the volume of a piece of metal that has a density of 6.68g.cm^3 and has a mass of 1975 g?
Answer: 296 grams/cm^3 (3 sig figs)
Explanation: Divide the mass by the volume to get grams/cm^3.
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.
xXxAnimexXx :)
Please Mark branilest!
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.
Learn more; https://brainly.com/question/14156701
Employers may not fire or other wise discriminate against an employee who does which of the following
Answer:
race, religion, sex, if they are 40 or older, have a disability, pregnancy/childbirth. hope that helped
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.
How do you estimate the density of an object without measuring its mass or volume?
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:
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
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
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).
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:
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 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.
fats that come from animlas
saturated fats are are mainlyderived from animals eg butter and lard and they are solid at room temperature
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 .
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.
Learn more about the electrons here:
https://brainly.com/question/2293721
#SPJ2
Please help!
The answer should be in g/mL
Answer 0.656378
Explanation: Its math
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.
Are the atoms of gold and carbon always moving or always motionless?
always moving
Or
always motionless
Write the following number in Standard (Numeric) Form. 5.8x10-5
Answer:
the answer of this question is 0.000058
The standard (numeric) form of 5.8 x 10⁻⁵ is 0.00005.
What is the standard (numeric) form?The standard (numeric) form is a way of writing very large or very small numbers in a simplified form that uses powers of 10.
In this form, a number is expressed as a single digit between 1 and 10, multiplied by a power of 10. The power of 10 indicates the number of places the decimal point must be moved to the left or right to obtain the original number.
In the case of 5.8x10⁻⁵, the number is a very small one. The power of 10 is negative, which means that the decimal point must be moved to the left by 5 places to obtain the original number.
Here is the expansion of 5.8x10⁻⁵ in the standard (numeric) form:
5.8 × 10⁻⁵
= 5.8 ÷ 100000
= 0.000058
Therefore, 5.8x10⁻⁵ can be expressed in standard (numeric) form as 0.000058.
To learn more about the standard (numeric) form, follow the link:
https://brainly.com/question/28263141
#SPJ2
14. Donna can lift 25 kilograms. How many grams can she lift?
Answer:
25,000g
Explanation:
1kg is 1000g, 25*1000 = 25,000
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 PLZ !!!!!!!!!!!!!
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
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
can you answer these questions about recycling glass ?
Answer:
they keep the plastic bottles and make a Christmas decoration from it to use
Which chemical element hates to be a follower?
Answer:
look up hope that helps you
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.
