Chemistry Middle School

a) monday & thursday

b) wednesday & saturday

c) tuesday & saturday

d) saturday & sunday

A) Monday & Thursdayb) Wednesday & Saturday C) Tuesday & Saturdayd) Saturday & Sunday

Answers

Answer 1

Answer: b

Explanation: 5*2

Answer 2
Answer : should be B

Related Questions

Why do you think it’s useful for scientists to classify matter? In other words, why do you think scientists need to identify something as a pure substance? Why do you think they need to know if something is a compound or an element?

Answers

Answer:

They need to know

Explanation:

Because if we didn't know that something was a compound of an element we could either blow ourselves up when we are mixing them or when we are looking for something bad between the compound and we don't know its a compound how do we fix it

Classifying substances as elements or compounds helps us to understand their properties.

Matter is anything that has mass and occupy space. There are several substances in the universe and all of them are composed of matter. It is necessary to classify matter for reference purposes. When we classify matter then it is possible to refer to substances under specific classes.

A pure substance contains only one kind of matter. It is necessary to classify something as a pure substance so that it is we can know if it contains one type of matter or different types of matter.

It is necessary for scientists to classify something as element or compound in order to understand its properties. Elements and compounds are pure substances.

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What is density?


1. a measure of salinity


2. the weight of water


3. the amount per unit volume of a particular material


4. the amount of salt in water

Answers

Answer: 3, the amount per unit volume of a particular material
3 is the correct answer

What periodic element is from france

Answers

Answer:

Francium

Explanation:

I really don't know how to explain this

Francium there is no explanation!

The image shows a projection map.




Which type of map is this?

flat model, Mercator projection
flat model, conic projection
highly distorted model, Mercator projection
highly distorted model, conic projection

Answers

A. Flat model, Mercator projection

Answer:

A. flat model, Mercator projection

Explanation:

I just took the test :]

PLEEASEE HELP ITS PAST DUE AND IM GIVING BRAINLIEST

Which process is an example of a physical change?

a. wood burning in a camp fire
b. iron rusting on a bicycle chain
c. ice melting after a snow storm
d. milk souring because it is old

Answers

Answer:

c or d

Explanation:

i dont know which one but it's one of those

please help i dont understand this

Answers

I don’t understand either
Thabkdmdgkkdjdndmdmfid

Why are lysosomes important?

Answers

When a cell is beyond repair, lysosomes help it to self-destruct in a process called apoptosis.

Answer: A lysosome is a membrane-bound cell organelle that contains digestive enzymes soooo. They break down excess or worn out cell parts, they may be used to destroy invading viruses and bacteria. If the cell is damaged beyond repair, lysosomes can help it to self-destruct in a process called programmed cell death, or apoptosis.

Explanation: So that's why it is important

HELP! A bone contains 6.25% of Carbon -14 it began with. How old is the bone ?

Answers

Answer:

6.25 yrs

Explanation:

6.25 years in total

Robert Hooke was the first scientist to give the cell a name. Which statement is true about him?

a)H e looked at an onion skin with his naked eyes to see cells.

b)He invented the microscope.

c)Under the microscope he observed box-like compartments of cork tree bark.

d)He used the microscope to observe skin cells.

Answers

Answer:

The answer is C

Explanation:

Can you mark me the Brainliest it helps a lot

C should be the answer! Have a nice day!

What kinds of anthropogenic activities produce acid rain?

Answers

Answer:

Rotting vegetation and erupting volcanoes release some chemicals that can cause acid rain, but most acid rain is a product of human activities. The biggest sources are coal-burning power plants, factories, and automobiles.

Answer:

coal and oil power plants and automobiles

Explanation:

Describe the structure of an atom. Be sure to include the terms nucleus, electron cloud, protons, neutrons, and electrons in your description

Answers

Answer:

The answer would be A because inside of an atom is protons and neutrons. Protons are + neutrons are neutral and electrons are -. The electron cloud is big not small.

Explanation:

Hope this helps, have a great day. God Bless you.

The is the part of the electrical circuit along which electricity travels.
_________ ________________ is a circular path of electric current, from the source of energy and back.

The flow of electric charge through a path is called an

A form of energy is _________________.

The ___________ uses electricity from the source.

Please help for brainlest

Answers

Answer:

The conductor runs a circular path from the power source, through the resistor, and back to the power source. The power source moves the existing electrons in the conductor around the circuit. This is called a current. Electrons move through a wire from the negative end to the positive end.

Explanation:

this help?

explain why the sun appers to be the brightest star in the sky. relate your explanation with an example such as street lights. this is science

Answers

Answer:

The sun is a star but It is the brightest in the sky because it is the closest star to earth.

I don't know how to compare it to street lights though...

Explanation:

The most common way humans contribute to the extinction of organisms is by

rotation of crops.

use of fertilizers.

destruction of habitat.

introduction of competing species.

Answers

Destruction of habit because you are destroying their home and comfort and their preys home to do theirs no food

The most common way humans contribute to the extinction of organisms is by destroying their habitats. By destroying the natural habitats of organism we are leading them to point where they cant survive.

What is extinction ?

Extinction of an organism is the gradual disappearance of the entire species of that organism due to natural calamities, human activities or, spreading diseases.

Human activities are the main culprits of the devastation of organisms and their habitats. Humans destroy the natural habitats of plants and animals for their selfish purposes.

Animals then starve and they are not fit to survive in other places which are entirely different from their natural habitat. Therefore, if these activities continues they will extinct.

Find more on extinction?

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