Which substance is a combination of different atoms?

Answers

Answer 1

Answer:

Answer:

Heterogeneous

Explanation:

A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded. A heterogeneous mixture is a mixture of two or more chemical substances where the various components can be visually distinguished.

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What element has 7 neutrons, 7 protons and 7 electrons??

Answers

A nitrogen atom contains 7 protons, 7 electrons and 7 neutrons.

What are Electrons, protons and Neutrons?

Electrons are defined as subatomic particles with a negative elementary electric charge that belong to the first generation of the lepton particle family, and are considered elementary particles because they have no known constituents or substructures.

A proton is defined as a stable subatomic particle, symbol p, H⁺, or ¹H⁺, having a positive electric charge of +1 e elementary charge, with a mass slightly less than that of a neutron and the mass of an electron is 1,836 times.

A neutron is defined as a subatomic particle found in the nucleus of every atom except simple hydrogen, where the particle derives its name from the fact that it has no electric charge as it is neutral. Neutrons are very dense. Atoms contains same number of protons, electrons and neutrons like in nitrogen.

Thus, a nitrogen atom contains 7 protons, 7 electrons and 7 neutrons.

Learn more about Electrons, here:

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The answer is nitrogen.

You find a blood stain that you know was caused by a gunshot. The blood stain would be considered a(n):Passive stain
Transfer stain
Impact stain
Active stain

Answers

This would be a passive stain

What occurs when an object travels in a curved path?

Answers

An object following any type of curved motion will necessarily be changing its direction as it moves. This change in direction constitutes a change in velocity, since velocity is a vector, and, thus, velocity has both a size, the speed, and a direction. So, if an object travels in a curved path, it changes velocity, and, thus, accelerates. This acceleration must be tied to a force. Newton's laws of motion explain this. Therefore, whenever an object travels in a curved path, there must be an unbalanced force acting upon it.

A compound mystery. why is a can of peas an carrots a mixture? what other mixtures can u list

Answers

a can of carrots and peas is a mixture because you can seperate them without chemicals other mixtures can include...
-oil and water
Lemon juice and tea
Honey and tea
Milk and chocolate
Coffee and cream
Cream and sugar
Coffee and sugar
Cake ingredients Chocolate and water
Cereal and milk
Oatmeal and raisins
Cookie ingredients
Sand and water
Orange juice and grenadine
Sugar and water
Sugar and tea
Cinnamon and water
Salt and water
Coffee (coffee bean + water)
Mixed drinks (mixer + alcohol)
Tonic water and lime juice
Soda and vanilla syrup

If an organism starts from only one cell,how do we get different body parts and organs

Answers

Every cell has chromosomes in its nucleus. In a human cell,
there are 26 of them. AND ... lined up on every chromosome
are thousands and thousands of GENES. Those carry the
instructions for what kind of organ or bone or tissue or hair
this cell will be used to build, how the structure will work, how
tall you will be, what color your eyes will be, how deep your
voice will be, and what illnesses you will have.

Every cell has the complete set of instructions in it. In the past
several years, we have just started to be able to read them, and
extraordinary progress has been made. There's an awful long way
still left to go.

Help with this question please.

Answers

There are 4 hydrogens on the right side $(2\mathrm H_2=4\mathrm H)$ , and 2 hydrogens on the left per molecule of $\mathrm H_2$ . To get the same number of hydrogens on both sides, the coefficient should be 2.

(Then the number of oxygens will be consistent, since $2\mathrm H_2\mathrm O$ contributes 2 oxygens, and so does $\mathrm O_2$ .)

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