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Natali5045456 [20]
3 years ago
7

A variable is the factor in a controlled investigation that does not change. True or False

Chemistry
1 answer:
Fantom [35]3 years ago
8 0
The thing that changes the thing that doesn't change is called the control
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In order to control pollution, you should reduce the need for _____________ goods and transportation.
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Answer:

nonrenewable

Explanation:

It's just an educated guess but you know plastic bottles and stuff like that contribute to pollution

5 0
3 years ago
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Part A Write balanced molecular equation for the reaction between nitric acid and calcium hydroxide. Express your answer as a ch
Basile [38]

Answer:

2HNO3+Ca(OH)2 = Ca(NO3)2+2H2O

Explanation:

The reaction between Nitric acid(HNO3)and Calcium hydroxide(Ca(OH)2) gives Calcium Nitrate( Ca(NO3)2 and Water( H2O)

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A change resulting in one or more new substances being formed is a?
dem82 [27]

Answer:

C. Chemical change

Explanation:

A physical change is where something is changed but it doesnt affect the build up of the chemical. For example, if you broke sticks and threw them on the ground, that would be a physical change because the change is happening to the physical being of the object and not its chemical buildup. However, if you lit those sticks on fire, that would be considered a chemical change because you end up with two substances, ash and the remnants of the stick. A nuclear reaction would result in something blowing up so its not that. And a physical property is like what it looks like or how it smells. Hope I helped you!

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3 years ago
To show the electron configuration for an atom, when would it be better to use an orbital notation than to use a written configu
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The answer is: when the aim is to show electron distributions in shells

An orbital notation is more appropriate if you want to show how the electrons of an atom are distributed in each subshell. This is because there are some atoms that have special electronic configurations that aren't obvious in just written configurations.
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3 years ago
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Reproductive cells are created by _____. mitosis meiosis cytokinesis
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The correct answer is meiosis. Meiosis is a process where a cell divides into two where these cells contain half of the genetic information from the original cell. Meiosis produces daughter cells containing 50% information from the mother and 50% from the father.
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