Answer:4>34.1>56
Explanation:ez
an example of a physical change that does not involve any changes in CHEMICAL PROPERTIES. Explain which physical properties have changed and list a chemical property which has not changed.
Answer:
Ripping a Paper
Explanation:
Physical Properties changed - The size has decreased, and the shape has changed.
Chemical property- Flammability
The rate of change of position (or distance traveled) with respect to time"
Answer:
Velocity...I believe
Answer: velocity or meters per second
Explanation:
The radioactive isotope used in the dating of fossils thought to be less than 40,000 years old is ________________.
Fill in the blank.
Answer:
The answer is Radiocarbon
what form of heat transfer makes warm air rise?
WILL GIVE 20 POINTS AND MARK BRAINLIEST IF YOU ARE RIGHT!!
Fill in the next verse of the song:
I see a little silhouetto of a man ________________
Which of the following might be included in a chemical
reaction?
a Molecules
b lons
C Pure elements
d All of the above
Answer:
D. All of the above
Explanation:
Molecules, ions, and pure elements might be included in a chemical reaction. Therefore, option (d) is correct.
What is a chemical reaction?A chemical reaction can be described as a reaction that brings the chemical conversion of one chemical substance to another chemical substance. The reactions cause chemical changes that include the rearrangement of electrons in order to create and break bonds between atoms.
The compound or molecules which are primarily utilized in a reaction are called reactants. Chemical reactions give products, which possess characteristics different from the reactants of the reaction.
Chemical reactions take place at a definite rate of reaction at a given concentration, temperature, and pressure. The rate of reaction increases with the rising temperature of the reaction as more activation energy is available for reactant molcules collisions.
Therefore, in a chemical reaction reactants and products can be present as Molecules, ions, and pure elements.
Learn more about Chemical reactions, here:
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Which gas sample contains the most molecules ?
Answer:
CO2
Explanation:
(a) CO2; according to Avogadro's Hypothesis, they all contain the same number of particles, therefore, the heaviest molecule, CO2 (molar mass = 44), will have the greatest mass. (b) all the same; at the same temperature all gases have the same kinetic energy.
PLEASE HELP
The Octet Rule explains why
A. Atoms form chemical bonds to create compounds
B. The electronegativity of fluorine is higher than chlorine
C. Ionic compounds have high boiling and melting points
D. Valence electrons are used in chemical bonding
E. Valence electrons are used in chemical bonding
It's not D that's all I know. Please answer with an explanation if you know.
Answer:
Explanation:
E
A motorcycle starts at rest and moves a distance of 460m .
If it has constant acceleration of 4m55 m/s2 what is its final velocity
Answer:
The final velocity of the motorcycle is 64.7 m/s
Note: Since the value for the acceleration of the motorcycle is not clear, it is assumed to be 4.55 m/s² in the calculation
Explanation:
Using the equation of motion that contains all the given values in the question: v² = u² + 2as
where v is final velocity; u is initial velocity; a is acceleration; s is horizontal distance
v = ?, u = 0 (since the motorcycle starts from rest), a = 4.55 m/s², s = 460 m
v² = 0² + 2 * 4.55 * 460
v² = 4186
take square root of both sides
v = 64.7 m/s
Therefore, the final velocity of the motorcycle is 64.7 m/s
This is a change in an objects motion caused by an unbalanced force
Answer:
This is a change in an objects motion caused by an unbalanced force.
- Acceleration
Answer:
Pressure
Pressure is done when a force is applied to an object to course a motion
DNA bases are attached to _____.
sugar molecules
both sugar and phosphate molecules
phosphate molecule
Answer:
both sugar and phosphate molecules
Answer:
Both sugar and phosphate molecules
Explanation:
How do the products of chemical reactions compare to their reactants? Question 5 options: The products usually weigh more than the reactants. The products often have completely different properties than the reactants. The products usually have more atoms than the reactants. The products are usually more toxic than the reactants.
Answer:
The products often have completely different properties than the reactants.
Explanation:
In a chemical reaction, the products are often completely different from the reactants.
When chemical reactions takes place, the species rearranges to form new bonds and to attain stability.
Therefore, the new products formed usually have completely different properties when compared to the reactants.
Also, in chemical reactions, mass is always conserved. The mass of the products and reactants are usually the same.
Salt is a common example of a(n) _____________ bond, while Water is a common example of a(n) _____________ bond.
Answer:
salt is ionic bond and water is Polar covalent bond
Explanation:
a snail slowly moves along at 3 ft/hr. what type motion velocity ,distance, speed acceleration displacement Please answer need it now!!!!!
Answer:
motion - forward
velocity - 3ft/hr
distance - 3 ft/hr
speed - 3 ft/hr
acceleration - none
displacement - ?????
Explanation:
Can y’all give me 5 facts about this
which best represents a compound?
Answer:
The one above B
Explanation:
The one above B is most represents a compound because compounds are chemically bonded and are always near each other.
The difference between the boiling point of a pure solvent and the boiling point of a solution of a nonelectrolyte in the same solvent is called the ___________________, a colligative property.
A. boiling-point elevation
B. freezing-point depression
C. molar freezing-point constant
D. molal melting-point constant
E. molal boiling-point constant
There is free rotation about the carbons of ethane but not th
of ethane. This is due to the fact that
A. the carbons in ethane are round
Balkenes do not rotate
C. the carbons in ethane are linked by double bonds
D. the carbon in ethane are smaller than those of ethane
Answer:
C. the carbons in ethene are linked by double bonds
Explanation:
The reason for the lack of free rotation about the carbons of ethene is that they are linked with with double bonds.
In single bonds afforded with the ethane compound, there is free rotation.
The double bonds confer a special restriction on the rotational potential of the bonded atoms round the carbon.
7th grade help me plzzzzzzzzzz
Match each term with the correct description below.
1. what is a charged atom that has gained one or more electrons?
2. What substance is held together by ionic bonds?
3. What metal and nonmetal transferrers electrons?
4. What particle has electrons that are shared unequally?
5. What forms when atoms share electrons by covalent bonds?
6. What two nonmetals share electrons?
7. What charge atom that has lost one or more electrons?
8. What two or metals "pooling" electrons?
a. metallic bond
b. covalent bond
c. anion
d. ionic bond
e. molecule
f. cation
g. compound
h. polar molecule
Answer:
1. anion
2. compund
3. ionic bond
4. polar molecule
5. molecule
6. covalent bond
7. cation
8. metallic bond
Explanation:
What type of bond (Ionic, Covalent or Metallic) would be created when carbon bonds with bromine?
Answer:
Covalent bond
Explanation:
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plssss helppp
will mark brainliest
Answer:
high melting point
Explanation:
high melting point
What will most likely happen if you place a piece of metal in a base?
O A. The metal will turn into a salt.
O B. The metal will neutralize the base.
C. The metal will give off a gas.
O D. The metal will not react with the base.
Answer:D
Explanation:
The metal will not react
A candy bar has ____ energy.
A. Kinetic
B. Potential
Answer:
Potential energy
Explanation:
A candy bar has carbs, sugars, and calories which are potentially going to be used as energy in a body.
Answer:
B. Potential
Explanation:
Because the candy bar is sitting still.
what is the electron configuration for lithium
Answer:
2,1
Explanation:
the electron configuration is 2s1
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Answer:
The three parts of the cell theory are as follows: (1) All living things are made up of cells, (2) Cells are the smallest units (or most basic building blocks) of life, and (3) All cells come from preexisting cells through the process of cell division. ... Today, the cell theory is considered the foundation of biology.
Explanation:
hope this help.. brainliest???
Answer:
i wanna give brailiest to the person at the top!
Explanation:
Learning Task No. 3: Write a short paragraph regarding the differences between
saturated and unsaturated solutions.
Type of Solution
Explanations about the differences of
the two solutions
Saturated solution
Unsaturated solution
Answer:
See explanation
Explanation:
A saturated solution is a solution that contains just as much solute as it can normally hold at a given temperature in the presence of undissolved solute. An unsaturated solution contains less solute than it can normally hold at a given temperature. A saturated solution can not dissolve more solute whereas an unsaturated solution can comfortably dissolve more solute until it attains saturation at a specified temperature.
There are 70 fisherman and 5 sea bass in the lake. Are sea bass considered a limiting factor?
Answer:
yes
Explanation:
Which pair of elements is most likely to form an ionic compound with each other?
sulfur and carbon
barium and chlorine
oxygen and fluorine
calcium and sodium
Which is NOT a shape of epithelial cells?
A.Cuboidal
B.Columbar
C.circular
D.squamous
