Which is the only element in group 1 on the periodic table that forms covalent bonds?

hydrogen
lithium
potassium
sodium
.

Answers

Answer 1

Answer:

Hydrogen

Explanation:

Hydrogen is the only nonmetal in group 1, therefore it is the only element in group 1 that forms a covalent bond.

Answer 2

Answer:

A.

Explanation:


Related Questions

What is the structure of the middle ear?​

Answers

Answer:

The middle ear is a narrow air-filled cavity in the temporal bone. It is spanned by a chain of three tiny bones—the malleus (hammer), incus (anvil), and stapes (stirrup), collectively called the auditory ossicles.

Explanation:

Hope this helps!;)

Jacqueline is a 42-year-old woman who is in her third trimester of pregnancy. Jacqueline has had three other children; their birth weights were 9.0 lbs, 9.5 lbs and 9.3 lbs. Jacqueline is a smoker with high blood pressure, and has gained 75 pounds during the last 4 months. 1. What is your diagnosis? 2. What test can you use to confirm your diagnosis? 3. What is Jacqueline's prognosis? 4. What treatments are available?

Answers

 The health condition identified is diabetes in pregnancy. To confirm my diagnosis, blood glucose test is performed.Jacqueline's prognosis, that is cause of the medical conditions, is gotten from her history of over weight babies and smoking. The available treatment is insulin injections.

Diabetes mellitus is a metabolic condition that occurs when the pancreas fails to produce enough insulin or when the body fails to use the insulin produced for glucose metabolism thereby leading to hyperglycaemia (increased blood glucose levels).

In pregnancy, diabetes is suspected in women who give this type of history:

Previous Delivery of babies weighing 9.0lbs and above.Cigarette smoking. And abrupt weight gain toward term of pregnancy.

Constant monitoring of Jacqueline is required to prevent complications during and after the pregnancy. This is done by performing series of tests and giving insulin injections when the need arises.

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In this excerpt, a reader can conclude that Lizzie is playful based primarily on her

Answers

Answer:

based on Lizzie's words

For both clinical and cosmetic reasons, plastic surgeons inject substances into connective tissue underlying the skin epidermis. This plumps up areas deficient in soft tissue, and is used to reduce surgical scars or wrinkles, for example. Which normal connective tissue components are good candidates to be injected as fillers in this type of procedure

Answers

Answer:B.) collagen

C.) glycosaminoglycan

Explanation:

How are growth and development dinstinct from each other

Answers

Answer:

Growth is a physical change in ones body size that can be easily observed.

Development is the ability to do things complex, challenging, and difficult.

I want answers please ​

Answers

Explanation:

1.arm&base

2.a shutter controlled by a lever

3.Nosepiece,objective lenses,stage clips

6. 100X.....(this means that the image being viewed will appear to be 100 times its actual size

If a diglyceride is formed, how many water molecules are involved?

a.
One.

b.
It depends upon the length of the fatty acids involved.

c.
Two.

d.
Three.

e.
None.

Answers

Answer:

b.

It depends upon the length of the fatty acids involved

Importance of antimicrobial emulsion​

Answers

Answer:

Citral is a typical essential oil used in the food, cosmetic, and drug industries and has shown antimicrobial activity against microorganisms. Citral is unstable and hydrophobic under normal storage conditions, so it can easily lose its bactericide activity. Nanoemulsion technology is an excellent way to hydrophilize, microencapsulate, and protect this compound. In our studies, we used a mixed surfactant to form citral-in-water nanoemulsions, and attempted to optimize the formula for preparing nanoemulsions. Citral-in-water nanoemulsions formed at So 0.4 to 0.6 and ultrasonic power of 18 W for 120 seconds resulted in a droplet size of < 100 nm for nanoemulsions. The observed antimicrobial activities were significantly affected by the formulation of the nanoemulsions. The observed relationship between the formulation and activity can lead to the rational design of nanoemulsion-based delivery systems for essential oils, based on the desired function of antimicrobials in the food, cosmetics, and agrochemical industries.

Is cell division a continuous process?

Illustrate with an example

Answers

Answer:

Cell division is the means of reproduction in unicellular organisms whereas it is the means of tissue growth and maintenance in multicellular organisms. ... In adults, cell divisions are involved in renewing old tissues rather than growth.,ya it is continuously processing

fatty acids are the building blocks of.

A. lipids
B. amino acids
C. DNA
D. monosaccharides

Answers

It’s most likely lipids! Hope this helps

Fatty acids are building blocks of lipids. The correct option is A.

Fats and oil are known as lipids.

Lipids are part of the classes of food which are made up of high proportion of carbon and hydrogen with very little oxygen.

Fats are solids and oils are liquids at room temperature. They serve the following functions to the body:

They provide the body with energyThey are solvents for fat-soluble vitamins and hormones.

Before lipids can be absorbed into the body, they must be broken down into fatty acids and glycerol.

Therefore, fatty acids are building blocks of lipids.

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state 6 importance of respiration​

Answers

Answer

Respiration is important because it produces energy that is essential for the normal functioning of the body.Respiration provides cells with oxygen and expels toxic carbon dioxide.It provides pure oxygen to alive and for proper functions.It is very important to live alive.It supply and remove oxygen and carbon dioxide. It has a leading role in functioning in the human body.

Normal blood clotting requires an adequate intake of vitamin K. Vitamin K is needed by the liver for
synthesis of prothrombin and other factors.
O a.
False
b. True
Clear my choice

Answers

It’s trueeeeeeeeeeeeeeeee

water is an important chemical that dissolves other chemicals into what

Answers

Answer:

A Solution

Explanation:

A substance that is dissolved is a solution

what evidence shows that biological molecules on earth form naturally?

Answers

Explanation:

La siguiente entrada tiene como objetivo realizar una breve explicación sobre las moléculas biológicas  lipídos y carbohidratos, las cuales son muy diversas ya que están formadas por carbono, lo cual hace que puedan formar muchos tipos de enlaces. Esta capacidad permite que las moléculas orgánicas  adopten muchas formas complejas, como son las cadenas, las ramificaciones y los anillos.

Las moléculas biológicas son grandes polímeros que sintetizas para poder enlazarse con otras subunidades mucho mas pequeñas conocidos como monómeros. Las cadenas de subunidades estan unidas por enlaces covalentes los cuales se forman por deshidratación, estas cadenas pueden romperse por hidrólisis. La moléculas biologicas más importantes son los carbohidratos, lípidos, proteínas y ácidos nucleicos.

A new member of your team is visually impaired. He's having a hard time reading his computer screen. How can you show that you value diversity? a) Suggest the organization may not be a great fit. O b) Tell him to apply for a different job within the organization that does not b) require computer usage. 12 Od Tell him that he might want to schedule an eye exam. c) d) Provide access to technology that can magnify or read what is on the computer screen.

Answers

Explanation:

Provide access to technology that can magnify or read what is on the computer screen.

how does a viral immunization help prevent disease

Answers

Answer:

When people get vaccinated they there will be less change of transfer of communicable diseases

All of the following statements about ferns are correct except:_________
A) ferns flourish in many habitats, but the majority are located in the tropics.
B) the sporophyte is a conspicuous generation.
C) sori are located on the back or ventral surface of fronds.
D) the gametophyte is a conspicuous generation.
E) ferns have underground stems called rhizomes.

Answers

Answer: B) because in higher plants, such as angiosperms and gymnosperms, the sporophyte is the dominant generation.

All of the following statements about ferns are correct except the gametophyte is a conspicuous generation. Therefore, the correct option is D.

In ferns the gametophyte is usually much smaller and less noticeable, whereas the sporophyte is the more noticeable generation. The sporophyte, the famous giant pearl fern plant, is a major stage in the fern life cycle. Gametes (eggs and sperm) are produced by the gametophyte, which is a small, autonomous stage responsible for sexual reproduction.

Therefore, the correct option is D.

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in some plants pink flowers are dominant over yellow flowers if Mario crosses two hybrids what happens

Answers

75% pink 25% yellow

Which of the following is an example of evolution?
A. Plants colonizing inland areas after developing vascular systems that can hold and transport water.
B. An organism developing immunity to a disease after surviving it.
C. A Chameleon changing color when entering a different environment.
D. An organism dying because it is not adapted to its habitat.

Answers

Answer: B

Explanation: because it adapt to its environment to survive

The development of an organ system like a vascular system over a long period of time in plants is an example of evolution. Thus option A is correct.

What is evolution?

Evolution is a series of events that have taken place in several years to make the species more advanced for the environment due to the introduction of multiple mutations in the genetic sequence.

During evolution, plants have gained the genetic mutation that codes for the vascular system which provide support and transports water in plants. So option A is correct.

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What can you learn about by studying DNA?

Answers

Answer:

whether these DNA tests can tell us much about an individual newborn's destiny, they are already a useful research tool that is providing new insights into how genes and environments interact, new avenues for understanding how mental illnesses (and other illnesses) develop and new pathways to explore potential ...

hope this will help you

mark me brainliest

Answer:

Explanation:

we can learn about DNA tests can tell us much about an individual newborn's destiny, they are already a useful research tool that is providing new insights into how genes and environments interact.

Glycolysis occurs in
1) mitochondria
2) cytoplasm
3) ER
5) Plastids​

Answers

Cytoplasm

Cytoplasm is a jelly-like substance between the nucleus and the cell membrane.

Various cell organelles like ribosomes, mitochondria, endoplasmic reticulum, etc. are suspended in the cytoplasm.

It helps in exchange and storage of substances among cell organelles.

Most of the metabolic reactions also occur inside cytoplasm.

What are the student’s observations and inferences before he starts his investigation?

Answers

Answer:

Hypothesis. A Hypothesis is an estimation of what might happen and the student's observation before moving on to investigate.

prove that Sin^6 ϴ-cos^6ϴ=(2Sin^2ϴ-1)(cos^2ϴ+sin^4ϴ) please sove step by step with language it is opt maths question ​ ​

Answers

Using basic identities in trigonometry....

Which of the following are the three areas of the tundra biome? (Choose all that apply.)
Arctic
Asian
Antarctic
alpine

Answers

Answer:

The three areas of the tundra biome are artic, antarctic and alpine.

what is adaptation give any four characters of aquatic plants​

Answers

Explanation:

Animals have special features that help them to live in a particular place. Therefore this features is called adaptation.

1] Aquatic plants have leaves that float on the surface of water.

2] Thier leaves are rarely have stomata.

3] Thier leaves can perform all the work without xylem.

4] They are usually lack cuticle layer in order to avoid excessive dryness.

Answer:

The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common. Aquatic plants can only grow in water or in soil that is frequently saturated with water.

Four characters of aquatic plants are as given below:

1) most aquatic plants donot need culticles or have thin culticles as cuticles prevent loss of water.

2) aquatic plants keep their stomata always open for they do not need to retain water.

3) on each side of their leaves are a number of stomata.

4) aquatic plants have less rigid structure since water pressure supports them.

Explanation:

I hope this answer help you.

Why did the White House experience water damage ?

1.
It is made of granite which is strong.

2. It is made of sandstone which is very porous and is easily penetrated by rainwater

3. It is made of non-porous sedimentary rock

Answers

The White House building is made of sandstone which is very porous as a result water is easily penetrated inside it which causes damage and make the walls of building weak.

The White House is made of gray-colored sandstone that is brought from quarry in Aquia, Virginia. The north and south porticos of white house building are constructed with red Seneca sandstone brought from Maryland. These sandstones are porous in which rainwater is easily penetrated in it that cause damage to the white house building so it is concluded that the building is made of porous sandstone.

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Is the scorpion vertebrate ? ​

Answers

Answer:

scorpions are invertebrates but are insects

Answer:

A animal that is an vertebrate has a spine, and backbone. Some of these animals can be humans, dogs, cats, etc. But most 6 legged creatures, 8 legged creatures do not have a backbone.

To answer your question, no, scorpions are not vertebrates because they do not a spine and backbone.

what is osmolarity of mammalian urine?​

Answers

Answer:

The osmolarity of mammalian urine may vary over time. The osmolarity of mammalian urine varies little between species. Mammalian urine is always hyperosmotic to blood. The osmolarity of mammalian urine may vary over time.

Explanation:

I hope it will help you

When neuroscientists employ the term "nucleus", they are usually referring to:_____.
​a. a cluster of glial cells in the dorsal-medial CNS.
​b. a neural unit composed of anatomically and functionally related neurons.
​c. a group of homologous ganglia located either in the cortex or in the cerebellum.
​d. cognitively synchronized clusters of apical dendrites anywhere in the PNS.

Answers

Answer:

B. A neural unit composed of anatomically and functionally related neurons.

.1.2 The type of control shown in the diagram is known as

Answers

Answer:

which diagram

Explanation:

I hope you understand

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