Answers
Answer: yes because it talks about what he pacifically he did and what the results was and he would probably need 2 get a little more data
Explanation:
Related Questions
Classify vodka (composed of 50% water and 50% alcohol).
Answers
Answer:
Liquor
Explanation:
Tyrone and Valerie wanted to determine what feature of a paper airplane would cause it to fly the farthest. Tyrone made his airplane with longer wings than Valerie's airplane. Valerie's airplane had shorter wings than Tyrone's. After testing the two airplanes several times, the data shows that wider wings help airplanes fly farther than shorter wings.
Which characteristic of science is missing from this experiment?
The question is not testable because paper airplanes are always changing.
The phenomenon is not observable because air resistance changes.
The experiment is not replicable because controlled variables are not included.
The results are not reliable because the airplanes were only tested one time.
Answers
The characteristic of science that is missing from this experiment is that "the results are not reliable because the airplanes were only tested one time".
Some of the characteristics of science include objectivity, verifiability , reliability, accuracy, observable, precision etc.
Based on the question asked, the results of the experiment are not reliable due to the fact that the the airplanes were only tested one time. The airplanes should have been tested multiple times to show that they are reliable.
In conclusion, the correct option is D.
Read related link on:
https://brainly.com/question/5500131
Answer:
D
Explanation:
what happens to the food dye in hot water?
Answers
Answer:
The food coloring mixes through the hot water faster than it mixes with the cold water. The reason for this is because in hot water, the water molecules have more energy and are moving faster than the molecules of cold water. This makes it way more easier for the dye to get mixed throughout the hot water.
Explanation:
3. What of the following determines an atom's identity?
A. Protons
B. Neutrons
C. Electrons
D. Nucleus
Answers
Answer:
protons
Explanation:
the number of protons in a nucleus are equal to the number of atoms in an element.
Protons determines an atom's identity. Therefore, the correct option is option A among alt the options.
Three essential elements make up an atom: protons, neutrons, and electrons. The nucleus, or central portion of the atom, contains protons, which are positively charged particles. Along with protons, neutrons, which have no charge, are found in the nucleus. On the other hand, electrons are negatively charged particles that move in regions called energy levels or shells around the nucleus. An atom's atomic number and designation as an element are determined by the quantity of protons in it. The usual size of an atom is between 0.1 and 0.5 nanometers; one nanometer is equal to one billionth of a metre.
Therefore, the correct option is option A.
To know more about atom, here:
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Is it correct or wrong
Answers
Answer:
i think correct
Explanation:
i am not sure but i hope it will help you
how to calculate valency of atoms?
Answers
Answer:
The valency of a molecule is zero.
Explanation:
Valency is calculated by calculating number of electrons present in outermost orbitals of atom of element.
Hope it is helpful.....Give an example of a non-biological chemical reaction that involves carbon. Name the process that converts a solid compound into a gas.
Answers
Answer: The combustion of methane (CH4) with O2.
Explanation: This is a chemical reaction involving carbon:
CH4 + 2O2 = CO2 + 2H2O
5
Which of the following is true regarding the particle nature of a solid?
Particles in a solid -
A
move very little, so it cannot easily change its shape.
B
are relatively far apart, so it is highly compressible.
с
are in continual motion, and can slide past each other.
D
are very far apart, so it can easily change its shape.
Answers
Answer:
this answer is b no u can it very easy
Explanation:
because solid and liquid can compress easily
plz support me
Answer:
A. move very little, so it cannot easily change its shape.
i got the total but can’t get these ???
Answers
Answer:
Volume of heptane in cylinder = 51.2mL
Volume of water = 33mL
Explanation:
Density(g/mL) = mass/ Volume
》Volume = mass/ Density
Please prompt me if I'm wrong in my workings. Hope this helped.
HELP! Fill in the blanks:
The net charge of an atom is equal to the difference between the_____
in the atom's nucleus and the_____
Answers
Answer:
I don't know
Explanation:
is today your test
2. The nucleus of an atom is the atom's dense and heavy core with a positive charge
I’m not so sure about the second one but I hope I helped :)
WHATS THE FREEZING POINT FOR WATER
Answers
Answer:
0 degrees Celcius and 32 degrees fahrenheit
Explanation:
Which of the following are decomposition reactions?
A. CH4 (9) +202 (9) - CO2 (g) + 2H20 (9)
B. N2 (9) + 3H2 (9) ► 2NH3 (9)
C. CaCO3 (s) - Cao (s) + CO2 (9)
D. 2H20 (1) ► 2H2 (9) + O2 (9)
Answers
Answer:
C and D
Explanation:
A reaction is said to be decomposed, if the reactant is broken down to liberate single element.
An explanation for a broad of observation, facts, and tested hypothses is called a
Answers
Answer:
that's is a theory
Explanation:
hope it may help you
Can someone plz help me? Plzz giving brainliest!
(Plz chose 3 questions)
Answers
Answer:
Facts: A D and maybe C I think you are intended to say C
Explanation:
A is certainly not an opinion. It is either true, or it is not. I think it is intended as a fact.
B is an opinion (which I think is true)
C is kind of iffy. It might be true and it might be an opinion. In looking it up, it is factually incorrect. Cats are related to wildcats in the middle east.
D is also iffy. They can just eat disease free rodents. I'd classify it as more opinion than fact.
E. definitely an opinion.
What is the approximate mass of one electron?
Answers
Answer:
9.1093837015 × 10^−31 kg
Very small mass
Behind your house, there's a gorgeous pond filled with frogs. You notice that the frogs behind Mr. Archer's house often have three legs. You start wondering if the fertilizer that Mr. Archer uses for his lawn is causing the deformities in the frogs. You collect 10 frogs and put the special fertilizer in their container (Group A). You put another 10 frogs and place them in a different container with just water (Group B). A week later, 7 out of 10 of the frogs in group A grew only three legs. The frogs in group B grew four legs.
What was the control group?
Answers
Answer:
Group B is the control group
Explanation:
In an experiment, a control group is the standard to which comparisons are made in an experiment.
will mark brainliest if correct
Answers
Answer:
that would be B
Explanation:
Which two elements have the same number of energy levels with electrons in them?(1 point)
A_ krypton and neon
B_ boron and oxygen
C_ lithium and francium
D_ neon and sodium
Answers
Its B) Boron and Oxygen
The correct answer is B.
boron and oxygen have the same number of energy levels with electrons in them.
The energy level of an element is the region around the nucleus where its electron is likely to be, this corresponds to the period of the element in the periodic table.
Elements found in period 1, have one energy level.
Elements found in period 2, have two energy level.
Examples of elements found in period 2 include:
lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neonIn the given options, only option B contains two elements with 2 energy level.
Thus, boron and oxygen have the same number of energy levels with electrons in them.
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Second ionization energies are always _____ than first ionization energies because the remaining electrons are attracted _____ strongly as the positive charge on the ion increases. A large jump in ionization energies is always observed after the _____ electrons have been removed.
Answers
more
remaining
WILL MARK BRAINLEST IF CORRECT!
1) Burning toast physical or chemical
2) Cooking eggs: physical or chemical
3) Melting butter: physical or chemical
4) Removing the pulp (solid) from the orange juice using a juice strainer.: physical or chemical
5) Cutting the toast with a knife: physical or chemical
6) Digesting the food: physical or chemical
Answers
2) Chemical
3) Chemical
4) Physical
5) Physical
6) Chemical
Câu 3: Nêu phương pháp hóa học nhận biết các dung dịch không màu sau: (a) HCI, NaOH, H2SO,, NaCl. (b) HNO3. KOH, BaCl. Ca(OH)2. Ba(NO3)2 (c) MgCl2, KCl, CuCl2, FeCl3, FeCl2 (chỉ dùng một thuốc thử). (d) Na2CO3, BaCl2, NaNO3 (chỉ dùng một thuốc thử)
Answers
Answer:
uvo 8hih8hjfiuwubosbwbhp0heg
La temperatura más baja registrada en EEUU fue de - 70 °F (en Roger Pass montana). Exprese esta temperatura en °C
(Porfavor ayudenme)
Answers
Answer:
[tex]thank \: yo[/tex]
If a sample of water has a mass of 200g and the final solution has a mass of 230g, how much solute dissolved in the water?
Answers
Which of the following are considered physical properties of a substance?
Color and odor
malleability and hardness
melting and boiling points
all of the above
Answers
hi <3
the correct option would be all of the above
hope this helps :)
Comparison between availability of food & population in current scenario.
In UAE.
(10-marks)
100-200 words please
Answers
Answer:
Answer is in the attachment
hope it's helpful
ok guys! so! im in my first chemistry class and i dont understand what an ion is!! help please! i need a simple breakdown of how to understand chemistry
Answers
Explanation:
Review and Study Material Before Going to Class. ...
Take Good Notes. ...
Practice Daily. ...
Take Advantage of Lab Time. ...
Use Flashcards. ...
Use Study Groups. ...
Break Large Tasks Into Smaller Ones.
reading a variety of chemistry books
Answer:
An ion is an atom or molecule that carries an electric charge.
Ions are identified by the use of a superscript to show the sign and size of their electric charge.
Negatively charged ions are called anions, and positively charged ions are called cations.
Explanation:
An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.
Come up with 2 examples of derived units from everyday life.
Answers
Answer:
answer
Explanation:
Area : Square Meters,
Volume : Cubic Meters,
Density : Kilograms per Meter Cube,
Velocity : Meters per Second Squared,
Force : Newtons (Mass multiplied by Acceleration or Mass multiplied by Displacement divided by Time squared)…..
an element consists of 1.40% of an isotope
Answers
Answer:
I think it's lead (pb). Hope this helps.
Answer:
lead
Explanation:
May someone help me with the answer to this question I’ve been stuck on it
Answers
Explanation:
No, that would be incorrect
Answer:
There arre two main parts of the atom, the nucleus and the orbital rings. The three subatomic particles are contained in each of these, the proton and neutron together in the nucleus and the electrons orbiting in the rings.
Which of these answers describes a scientific law?
(Pls)
Answers
Answer:
big ablsolty long pp
Explanation:
dong
