Some students at a middle school conducted a laboratory investigation to learn more about the physical properties of different elements. They observed four samples and recorded their observations in the table above. Based on these observations, which sample is most likely a nonmetal?



A.
Sample 1

B.
Sample 2

C.
Sample 3

D.
Sample 4

Answer:

A

Explanation:

1. The colour is non metallic.

2. properties of metal solidness is not there, because of results of hammer experiment.

3. Physical consistency is not solid.

Etc.

From the given observations for the four samples, it can be inferred that sample A is a non-metal. This is because the given properties of sample A do not match the properties of metals. So correct option is option A.

The properties of metals are different from non-metals. The properties of metals include a high melting point, high density, malleability, and ductility. The metals are shiny and are good conductors of heat and electricity. The metallic oxides are basic in nature

The non-metals have a relatively low melting point, and low density. They are not ductile or malleable as they are brittle. Non-metal has a dull appearance. They are bad or poor conductors of heat and electricity. The oxides of non-metal are acidic in nature.

To learn more about non-metals, refer to the link:

https://brainly.com/question/29400906

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Which of the following would be considered the strongest evidence that two species are related to one another?
a. common structures
b. shared taxon
c. similar genes
d. same extinction pattern

Mendel cruzo plantas de guisantes (Pisum sativum) de flores rojas heterocigotas con otra de la misma especie pero de flores blancas recesiva. ¿Cuál seria el resultado ( fenotipo y genotipo)? Realiza el cruce pertinente.

Which statement is true of meiosis?
A. Organisms use meiosis to repair damaged cells.
B. Organisms use meiosis to grow.
C. Organisms use meiosis to make reproductive cells.
D. Organisms use meiosis to replace blood cells.

1. Which of the following functions is the cell membrane responsible for? (Choose all that apply) containing the cell U protecting the cell regulating the cell's interaction with its surroundings housing hereditary information​

If you have a semi-
permeable membrane and
both sides are at
equilibrium, which direction will the solutes move?
A. Only to the left
B. In both directions

If an ecosystem like the wetlands was in danger of collapsing, what could I do to fix it?

In a cladogram, what represents the most recent common ancestor shared by a clade?
a. a mark by the clade's derived character
b. the overlapping of one clade upon another
c. the longest branch
d. the node where branches meet

How does a population grow with unlimited food, space and water

Assume that this is one of Santhi's chromosomes obtained from a sample of her blood. This chromosome is composed of two chromatids joined by a centromere. Which of the following statements is INCORRECT? The cell that contains these sister chromatids must be diploid. The sister chromatids were formed by replicating a single chromatid. The sister chromatids were joined by fertilization, bringing together a maternal and paternal chromatid.

Is the force that pulls you to the outside while rounding a curve

One of the deadliest animals on earth is the rough skinned newt. It produces highly toxic skin toxins. In the 1970s, three hunters were found dead while camping in Western Oregon when they accidentally boiled a rough skinned newt in their coffee pot. Scientists discovered that they were becoming more toxic due to a common predator: the garter snake. As garter snakes were growing more immune to their toxins, rough skinned newts were growing more toxic in what is known as an “evolutionary arms race”.

Though the genes for the garter snake immunity are most likely polygenic, however, let us assume that the immunity is caused by a single dominant allele for this exercise. Those without the dominant gene (the recessive genotype), are NOT immune to the toxins of the rough skinned newt.

In 1975, in a population of 88 garter snakes on the coast of Oregon, 54 of them exhibit the recessive genotype are therefore not immune to the rough skinned newt’s toxin.

What is the frequency for the recessive genotype (q^2)?

Solve for q:

Solve for p:

How many snakes are heterozygous?

How many snakes are homoozygous dominant?

How do ocean currents influence people?

A. Oceans currents influence climate
B. Oceans Currents influence plate tectonics
C. Oceans currents influence the local politics of an area
D. Oceans currents influence the length of the days ​

Which of the following are classified as
moderately-restricted?
A. National Historic Sites
B. National Wildlife Refuges
C. National Monuments
D. National Mall

What is the complementary DNA strand to G C A T C T A A ?

The illustration shows a pedigree with an autosomal recessive mutation.




What is the possibility that the male in the F 2 generation will express the mutation?



70%

25%

100%

50%

35
Which best describes another name for an organism that is heterozygous for a trait?
A recessive
IN
B hybrid
purebred
D) dominant

At the beginning of the night, the moon is low in the sky. Later in the night, it is high in the sky. Explain why the moon appears to move in the sky.

a. Earth is revolving the sun.
b. Earth is rotating in space.
c. The moon is rotating on its axis.
d. The moon is moving toward Earth.

Based on our knowledge of word parts, what
substrate do you think the enzyme to break
down nucleic acids might be names?

1. Solids have a definite volume and a definite shape
Group of answer choices

True

False

2. A mixture IS a pure substance
Group of answer choices

True

False

Need help with my science homework please and thank you

_________ are weak bonds that hold the two strands of DNA together, but also allow the DNA to separate and replicate.

In order to insure the survival of our planet, people have a responsibility to

A.avoid recycling materials
B.eliminate all plant life on this planet
C.consider the impact of their actions
D.use as much energy as possible

Select all the statements that correctly describe the difference between DNA and RNA.

A) RNA nucleotides contains uracil instead of thymine as in DNA
B) DNA consists of two strands of nucleotides while RNA has one
C) RNA consists of phosphate group while DNA has nitrogenous group
D) DNA nucleotide comprises deoxyribose sugar while RNA consists of ribose sugar
E) DNA nucleotides contain and adenine-uracil base pairing
F) RNA is more complex than DNA because it has more types

True or False: New DNA is copied from existing DNA

Green plants are able to make their own food from
simple raw materials around them. This process is
called Blank
The
energy
needed for
photosynthesis comes from the B
LC с is a substance that absorbs sunlight.
The light energy is able to
carbon dioxide
and
E into F The
sugars are the
plant's G Oxygen is made as a H Н.
product.

b. “Glycolysis occurs in the cytosol of the cell and does not require
oxygen.” Other word(s) for require:

CAN SOMEONE PLZ ANSWER THIS

Isabella liked to sunbathe. However, after she learned that ultraviolet rays are a cause of environmental mutations, she decided to stop sunbathing When can an acquired mutation be passed from parent to offspring? O A only if the mutation occurs in the sex cells B. only if the mutation occurs in the y-chromosome C. only if the parent has an acquired mutation in the autosomal chromosome D. only if both parents do not have the mutation in the sex cells​

Metals and minerals accumulate in specific regions on Earth due to _______ activity and as part of the rock cycle. When sustainable yield is achieved, the rate of replenishment is equal to the rate at which the resource is harvested. This means that the resource can be harvested _______. Plate motion can create the proper temperature and _______ underground for hydrocarbons to release from kerogen.

PLEASE ANSWER THESE 3 QUESTIONS ASAP GIVING 23 POINTS AWAY!!!!!!!!!