1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kobotan [32]
3 years ago
12

Question 1 Unsaved

Biology
2 answers:
Law Incorporation [45]3 years ago
8 0

ANSWER 1

<h3>(C) FLAMMABILITY</h3>

Flammability is a chemical property and is not a physical property. It can be only observed when the substance changes from one form to another. For example, a paper is a flammable substance and after being burned it changes itself into ashes and doesn't remain a paper anymore.

ANSWER 2

<h3>(B) SOLID</h3>

Solid holds a fix volume and shape. The particles of a solid are held into their place and cannot be compressed thus forming a rigid structure. There is very little space between the particles hence, they cannot move.

ANSWER 3

<h3>(D) ALL OF THE ABOVE ARE A EVIDENCE OF CHEMICAL REACTION</h3>

There are 5 simple ways to depict if any chemical reaction has occurred or not. It includes color change, the formation of ppt, effervescence, light emission and temperature changes.

<u>COLOR CHANGES:</u> A change in color can clearly tell you that a chemical reaction has occurred. for example, a brown copper liberty statue has turned green due to a series of chemical reactions.

<u>FORMATION OF PPT: </u>The formation of precipitate shows that a chemical reaction has been done. It is the formation of insoluble solid from the liquid solution.

<u>BUBBLES OF GAS: </u>Some of the reactions produce gas as their final product. For example in the electrolysis of water one can observe clear bubbles arising from the electrodes.

ANSWER 4

<h3>FALSE</h3>

In a homogenous mixture, the components composition which makes up the mixture remains unchanged. In a vegetable soup and chocolate chip cookies, the amount of ingredients used does not remain the same till the end.

ANSWER 5

<h3>(D) ALUMUNIUM</h3>

A pure substance only contains one element. An aluminum is only made up of one substance while the other three things are a mixture of different substances. Like air is a mixture of hydrogen, oxygen and other gases, salt water is a mixture of sodium and water and granite is made up of different compounds. All of these three are heterogeneous mixtures.

ANSWER 6

<h3>(A) Potassium iodide</h3>

To name this organic chemical organic compound one has to make use of IUPAC  nomenclature. The compound KI contains an element from the halide group that is group 7. According to the priority table, iodine should become the parent name.

ANSWER 7

<h3>FALSE</h3>

According to the law of conservation of mass, in an isolated system, the mass can never be created nor destroyed by chemical or physical means. In simple words, it means that after a chemical reaction the total mass of the reactants will be the same as of the product.

ANSWER 8

<h3>(A) Single replacement</h3>

In the above-mentioned reaction that is;

                   Na + KCl ⇒ K + NaCl

Single replacement is observed as sodium takes the place of potassium. Sodium is much reactive than potassium thus quickly removes potassium from the compound and combines with chlorine to form sodium chloride.

ANSWER 9

<h3>(D) ADDING MORE POWDERED DRINK MIX</h3>

All of the above answers are correct. As quick stirring and breaking the solute into smaller pieces will increase the surface area of the substance and heating the mixture increases the kinetic energy of the particles, thus making them vibrate faster. Hence all of these things make the powdered drink mix to be dissolved easily.

ANSWER 10

<h3>(D) 0.77g/cm3</h3>

The formula for density was proposed by the mathematician Archimedes. It is dividing the mass of a substance with the volume of the substance. By dividing 5.854g of the material with 7.57cm3 of the substance we will get 0.77g/cm3.

               

Paraphin [41]3 years ago
5 0
1.Flammability
2.Solid
3.All of the above are evidence of a chemical reaction.
4.False
5.Aluminium
6.Potassium Iodide
7.False
8.Single Replacement
9.Adding more powdered drink mix
10.0.77g/cm³
You might be interested in
Which process begins with the replication of DNA in the nucleus of a cell?
Lera25 [3.4K]
Pretty sure it’s
A. Cell division

Replication of DNA happens in interphase, s-phase
4 0
2 years ago
Karina is looking at a group of cells under the microscope. The organism has many cells, each with a cell wall and green chlorop
Alisiya [41]
The kingdom would be Plantae because it has membrane bound organelles as well as green chloroplasts, and a nucleus.
3 0
3 years ago
Read 2 more answers
What type of information is available to scientists through a Global Positioning System (GPS) device?
tiny-mole [99]

The answer is C. This is the only choice that has to do with location.

6 0
3 years ago
Read 2 more answers
Genes determine the _________of an individual.
Fiesta28 [93]

Answer:Traits are determined by genes, and also they are determined by the interaction with the environment with genes. And remember that genes are the messages in our DNA that define individual characteristics. So the trait is the manifestation of the product of a gene that is coded for by the DNA.

Explanation:

3 0
2 years ago
On average, bone marrow accounts for about 4 percent of a person’s total body mass. If your patient weighs 200 pounds (90.7 kilo
NeTakaya

Answer:

Many people with blood cancers, such as leukemia and lymphoma, sickle cell anemia, and other life-threatening diseases, rely on bone marrow or cord blood transplants to survive.

Healthy bone marrow and blood cells are needed in order to live. When disease affects bone marrow so that it can no longer function effectively, a marrow or cord blood transplant could be the best treatment option; for some patients it is the only potential cure.

Explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • The primary human source of greenhouse gases in earths atmosphere is:
    15·2 answers
  • Which structures are part of the body's first line of defense against pathogens?
    13·1 answer
  • Heat and sunlight are both ______ that cause a reaction to plants.<br><br> HELP!!!
    10·1 answer
  • What is science or pseudoscience?
    7·1 answer
  • What are the three common structures of a Protist, animal and plant cell?
    9·1 answer
  • You have discovered the fossil remains of three organisms. One is
    15·2 answers
  • Which of these is an abiotic infectious agent?
    6·2 answers
  • Help please !!!!!!!
    9·1 answer
  • Who all is transgender?
    15·2 answers
  • What is segregation in biology​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!