What is the difference between a"characteristic” and a “trait"? Give an example of
each.

Answers

Answer 1

Answer: A trait is like a quality and a characteristic is something that makes you different from others, it’s like a unique attribute. For exemple the sound of your laugh if you have a weird one could be a characteristic.

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Please help with the last problem!
the first astronauts to travel to distant stars might use what to get up to light speed instead of engines

Which qualities describe the mass and charge of an electron?A.
mass equal to that of a proton; positive charge
B.
mass equal to that of a proton; negative charge
C.
mass 1/1836 that of a proton; positive charge
D.
mass 1/1836 that of a proton; negative charge

Answers

mass equal to that of a proton; negative charge

Please tell me what orders they go in

Answers

Mechanical energy is energy of an object because of its potential and kinetic energy.
Gravitational potential energy is energy of an object because of its height above a surface.
Elastic potential energy is energy stored in a compressed or stretched object.

What kind of particles make up a compound

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Two or more elements make up a compound

Answer:

Two or more elements make up a compound.

Explanation:

Name the type of chemical reaction : CaO(s) + H2O(l) -----------Ca(OH)2(aq)

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It is called Synthesis reaction

What is the mass of 225 cm ^3 of ethanol? ethanol has a density of 0.789 g/cm^3

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Answer:

177.53 grams

Explanation:

To find this, change the density equation from $d=(m)/(v)$ to $dv=m$ , doing this will allow you to multiply your given density (0.789 g/cm^3) by your given volume (225cm^3), giving your mass of 177.53 grams.

How would changing the proportions of substance in an alloy change its properties?

Answers

An alloy is a mixture of two or more metals which is produced with a specific proportion between metals. So, if the proportion is changed the physical characteristic would be changed as well. For example, brass musical instruments are made of brass which is a mixture (an alloy) of zinc and copper in a specific proportion. If you change a proportion, you will change the physical characteristic of brass musical instruments, and a sound they produce will be different.

Final answer:

Adjusting the proportions of substances in an alloy can significantly alter its physical and chemical properties, including hardness, boiling point, physical strength, and resistance to corrosion. These changes can cause phenomena such as rusting or shifting in acidity.

Explanation:

Changing the proportions of substances in an alloy impacts its properties. For instance, changing the ratios of iron, carbon, nickel, and other elements in steel, an alloy, can affect its physical strength and resistance to corrosion. It's crucial to understand that in any alloy, the relative compositions of different elements produce the character of the alloy. For example, in steel, altering the amount of carbon can change the hardness and tensile strength of the final product.

It's also important to know about the law of multiple proportions in chemistry. This law states that when two elements react to form more than one compound, a fixed mass of one element will react with masses of the other element in a ratio of small whole numbers. In alloy formation, these proportions of mass can significantly affect the properties of the resulting alloy.

Physical and chemical properties, such as hardness and boiling point, can be altered by changing the proportions in an alloy. These shifts can lead to both physical or chemical changes, such as melting, freezing, rusting, or even changes in flammability and acidity.