Chemistry Middle School

Define the following terms

Uniformitarianism

&

trace fossil

Answers

Answer 1

Answer:

Uniformitarianism- A theory that geologic process that occur today are similar to those that have occurred in the past

Trace Fossil- A fossil of a foot or trail or other travel of an animal rather than of the animal itself

Answer 2
Uniformitarianism: the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.

Trace fossil: a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself

Related Questions

some students observe four different lab investigations. The students record their observations in a table.
Investigation
Observations
1
A beaker of water is
heated on a hot plate. Bubbles form in
the water, and steam is given off.
2
Oil is added to a beaker of water. Oil forms a layer on top
of the water
3
Sand and iron filings are mixed in a beaker. A magnet is
then used to separate the iron filings from the sand.
4
A piece of chalk is placed in a beaker of vinegar Bubbles
form as a gas is given off.
Which investigation most likely involved a chemical reaction?

Answers

Answer:

Number 4 is an example of a chemical reaction

Explanation:

heThe chalk is reacting with the vingear which is creating a new substance. The new substance is the gas that the reaction gives off.

I think the number 4 is the right answer

Describe the concentration of hydronium ions and hydroxide ions when a base is added slowly to a white vinegar solution. The pH of white vinegar is 3.1.

Answers

Answer:https://brainly.com/question/22666401

Tis question is already answered my frnd

What happens to salt water and fresh water when you try to mix them.

Answers

Answer:

Salt water overtakes the fresh water

Explanation:

Answer:

It all becomes salt water, unless there is enough fresh water to dissolve the salt.

Explanation: Science/Chemistry

If Enough Thermal energy And change of state, write each sentence.
Write (solid), (liquid), or (gas) to complete each sentence
If enough Thermal energy is added to a liquid, it will change to a

___________

Please explain in simple terms.
Spam = remove
Googling it = Remove

Answers

Answer:

If enough thermal energy is added to a liquid lets say cold it will freeze turning it into a solid. they same for a solid if enough thermal energy is added it can turn to a liquid or a gas.

Explanation: Its science.

Answer:

gas

Explanation:

I don't know, just it is gas bc the atoms gain space and move freely and yeah

A disease caused by the inflammation of mucus membranes inside the bronchial tubes. There are more than 3 million U.S. cases a year.

Answers

Inflammation can have causes that aren't due to underlying disease. Examples include injuries such as sprains and strains, overuse, or insect bites.

PLS HELP ME IT IS SUPPOSED TO BE DONE IN 10 MINS PLS In a two paragraph (it can be a 2 sentence paragraph) extended response, summarize the ways in which technological advances and enforcement of safety and environmental laws and regulations are attempting to avoid or reduce the negative effects of finding, producing, and transporting oil.

Answers

Answer:

Environment: They must be supplied and used in ways that have minimal safety and environmental stewardship have advanced safety regulations and practices, promulgated rules for reducing VOC emissions from oil and gas production and ... disposal protocols are similarly reducing negative impacts to air and water.

Explanation:

( 15 points to whoever replies quickest no links pls ) a farmer has used a fertiliser containing ammonium nitrate, potassium nitrate and ammonium sulphate on his fields but some may have leached into a nearby river. If a sample of river water was tested, what colour would the flame be if there was fertiliser contamination

Answers

If water of the river was tested there would be orange color flame.

What is fertilizer?

Millions of tons of air, natural gas, and mined ores are transformed into plant nutrition products based on the three crucial nutrients nitrogen, phosphorus, and potassium by the fertilizer industry.

The process begins by combining nitrogen from the air with hydrogen from natural gas at high temperature and pressure to produce ammonia, which is then used to make nitrogen-based fertilizers, the largest product category. Natural gas is used as a raw material for about 60% of the time, while the remaining 40% is used to power the synthesis process.

The nitric acid created from the ammonia is combined with it to create nitrate fertilizers like ammonium nitrate (AN). Urea can also be made by combining ammonia with liquid carbon dioxide. To create UAN (urea ammonium nitrate) solution, both of these products can be combined with water.

Therefore, If water of the river was tested there would be orange color flame.

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https://brainly.com/question/3204813

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Which type of mixture looks like it's composed of different substances?
Atomic
Homogenous
Heterogeneous
Ionic

Answers

Answer:

Heterogeneous Mixtures look like it’s composed of different substances.
heterogenous mixture, since the substances are not dispersed evenly, so they’re easier to detect!

If you start with 5.5 liters of hydrogen peroxide (H2O2), how many molecules of oxygen gas (O2) will be produced?

Answers

Answer:

2.75 mol O2

Explanation:

2 H2O2 = 2 H2O + O2 is the formula

heres a picture of the work

Ans is 2 oxygen atoms

Giving brainliest and thanks to best answer

Answers

B is the correct answer
B is the correct answer

Does an acidic solution contain hydroxide ions? Explain your answer.

Answers

Answer:

Yes but there are more hydrogen ions than hydroxide ions.

An acidic solution contains a large concentration of hydronium ions than hydroxide ions. Yes, an acidic solution contains hydroxide ions.

What are hydroxide ions?

Hydroxide ions are produced from the ionization of water molecules carrying the positive charge on hydrogen.

A solution contains both the hydroxide OH⁻ and hydronium ions H⁺.

In order to make a solution acidic, a solution must contain more hydronium ions compared to hydroxide ions.

Yes, an acidic solution contains hydroxide ions.

Learn more about hydroxide ions.

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How does resource extraction affect local and national economies?

Answers

Answer:

The direct channels by which extraction can affect the economy are of particular interest. The development of mines or oil and gas fields can result in significant shocks to a regional economy, generating jobs and drawing in capital from other regions and countries.

Explanation:

What happens to salt water and fresh water when you try to mix them.

Answers

Answer:

the lighter fresh water rises up and over the salt water

Explanation:

this is because the salt water is denser

Answer:

When trying to mix fresh/salt water it leads to variable and dynamic chemical conditions, especially salinity because fresh water flowing into the estuary is less salty and less dense than water from the ocean, it often floats on top of the heavier seawater.

Explanation:

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PLEASE HELP!!!!!!!! giving brainlist

Answers

Answer:

I can only give the answer for the first page.

Explanation:

1. Thermal energy always moves from hot objects to cold objects.

2. When two states of matter reach the same temperature, it is called thermal equilibrium.

hot to cold thermal radiation

What type of worm has a circulatory system?
Nematodes
Segmented worms
Roundworms
Flatworms

Answers

Your answer will be Segmented worms. Segmented worms have a closed circulatory system in which blood is enclosed in blood vessels.

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