Write about the characteristics of carbon compounds:the carbon atom structure connection types;
The characteristics of carbon compounds are they exist with different structures in which the atoms are arranged differently and it forms more compounds than other elements combined.
The carbon atom has atomic number 6 which represents the number of electrons. It is represented by C and it is a non- metal. It has 6 protons, 6 neutrons, and 6 electrons. They are smaller in size so that it can fit in to larger molecules.
It is the only element that can form different compounds because each carbon atoms can form four chemical bonds to other atoms.
The structure of carbon atom is represented with its atomic number 6. The first two electrons are present in inner shell and the remaining four are present in the second shell.
The carbon combines with oxygen, hydrogen, and nitrogen to form many molecules for cellular function. Carbon and hydrogen combine to form hydrocarbon chains and rings.
For example the structural formula for Methane (CH4)
1. Generally speaking, where on the periodic table are the elements that form ions requiring!Roman numeral in their names?
The middle, or the transitional metals
When naming elements, we use roman numerals to indicate what their charge is. The charge of an element is affected by their number of valence electrons (outermost electrons).
Transitional metals are generally multivalent, meaning that element has more than one possible number of valence electrons. This makes them have more than one possible charge. Roman numerals indicate which charge of that element is used/discussed.
Which of the following is the correct definition of convection?A. the transfer of heat by currents
B. the transmission of heat across matter
C. the electromagnetic radiation from the surface of an object which is due to the object's temperature
D. the transmission of heat across empty space
Answer: A. the transfer of heat by currents
Explanation: There are three modes of heat transfer:
1) Conduction: This type of heat transfer happens when there is direct contact between the two object. Example: heating a pan on stove.
2) Convection: This type of heat transfer happens when there is a movement of fluid (liquid or gas) due to the movement of hot layers to the top and cold layers to the bottom which leads to convection currents. Example: Heating of swimming pool.
3) Radiation: This type of heat transfer happens when there is direct transfer of energy through space. Example: Heating of earth's surface.
B. The transmission of heat across matter is conduction.
C. The electromagnetic radiation from the surface of an object which is due to the object's temperature is radiation.
D. The transmission of heat across empty space is radiation.
A: The transfer of heat by currents.
Convection is the transfer of heat by currents, typically within a liquid or a gas. When heat is transferred by convection, matter flows.
Why are the surface temperature on the moon more extreme than the surface temperature on earth
Because The moon doesn't have an atmosphere unlike Earth.
The surface temperature on the moon more extreme than the surface temperature on earth because the moon doesn't have an atmosphere.
after a fire, the ashes have less mass and take up less space than the trees and vegataion before the fire. how can this be explained in terms of the Law of Conservation of mass?
Fire expends ENERGY which is a by-product of conversion of matter.
The calories or therms of a fire equal a certain amount of mass.
When MATTER (Electron) and ANTI-MATTER (Positron) collide they don't inhillate each other with nothingness, they always realse TWO gamma particles.
The ENERGY of the TWO gamma particles CONSERVES the MASS of the ELECTRON and The POSITRON
This is what Einstein meant by E=mc2
ENERGY has physical properties than can be measured.
These properties equal the mass that no longer exists after you measure the mass BEFORE and AFTER
The AFTER MASS + the ENERGY MUST equal the BEFORE MASS to at least 99.999%
You must take heat, light and other PARTICLES into consideration.
Their MASS plus their ENERGY
this can be explained in terms of the Law of Conservation of mass because you just have to multiply the number of amount that was lost during the fire by 5
so if they lost 489 miles of mass from the fire, then u will have to multiply 489 by 5. 489x5=2445
What effect does observing a substance's physical properties have on the substance?
There is no effect. When you observe a substance's physical properties, you're not doing anything that would catalyze a chemical change. For example, you most often observe with your eyes, and/or, if safe, you waft the substance's smell to your nose. Neither of these observations will effect the substance's physical properties.
Taylor mixed two liquids together in a beaker. The beaker quickly heated up. What does this indicate about the reaction that took place in the beaker?A. that there was no energy transfer B. that energy was created C. that energy was transformed D. that energy was destroyed
Explanation:energy cannot be made or destroyEd according to a law of energy