Directions: Read the paragraph and identify the correct words that fit in the given sentences
inside the box. Write your answer in a separate sheet of paper.
Elements
non-metal
chemical process components
metal
more
properties
metalloids
properties
Compounds
one
chemical
are made up of
Elements and Compounds are all around us. (1)
utumn or atoms of the same kind. They are the simplest type of matter and cannot
be broken down into components. Each element is made entirely from (2)
type of atom. Each element is unique and no two elements have the same set of
(3)
Some are in the same state but they have (4)
properties.
Some elements are (5) like iron, gold and silver. Others are (6) like
Nitrogen, Oxygen and Ilydrogen. There are elements that are (7)
like
Boron. Silicon and Germanium.
(8)
are combination of (9)
or (10)
elements
like water which is a combination of Hydrogen and Oxygen; salt which is made
up of sodium and chlorine; and rusts formed when an iron reacts with oxygen.
Compounds can be broken down into it's (11) through a (12)
process and formed when two elements are combined together. It has unique
properties that are different from the properties of the elements that make them

Answer: Adenine and guanine are the two purines and cytosine, thymine and uracil are the three pyrimidines. The main difference between purines and pyrimidines is that purines contain a sixmembered nitrogencontaining ring fused to an imidazole ring whereas pyrimidines contain only a sixmembered nitrogencontaining ring. They both are types or categories of nitrogen containing bases present in nuclei acids of DNA and RNA.

Purines are 2 Ring or Carbon Ring, Nitrogen containing bases. That consist of these 2 rings next placed next to each other. These examples include - Adenine and Guanine.

Pyrimidines are 1 or single Ring Nitrogen containing structures. There are 3 nitrogenous bases that are categorized as pyrimidines. Cytosine, Thymine, and Uracil.

Answer:

My wife and I just visited the City of Baguio for a week. We stayed at the Hotel Supreme Convention, which was very nice. We ate dinner at some really nice places: Mario's (expensive), Don Henrico's (mid), and Good Taste (cheap). We found a nice bar called the Old Bohemian for good live music. We ventured out toward Camp John Hay a couple of times for shopping(the commissary is a tourist trap with retail prices). We also did some street shopping.

Explanation:

My wife and I just visited the City of Baguio for a week. We stayed at the Hotel Supreme Convention, which was very nice. We ate dinner at some really nice places: Mario's (expensive), Don Henrico's (mid), and Good Taste (cheap). We found a nice bar called the Old Bohemian for good live music. We ventured out toward Camp John Hay a couple of times for shopping(the commissary is a tourist trap with retail prices). We also did some street shopping.

Answer:

Explanation:

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If you lived in Manila or Baguio, how would your weight change? It would probably depend on what they are eating, how long they exercise, but not living in a different place, right? This is mind - boggling and i don't know what you mean or if you're asking a different question.

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Hope this helps! <3

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Answer:

1. Alkali metals (group 1)

2. halogens (Group 17)

3. noble gasses (group 18)

Explanation:

1. alkali metals only have one valence electron meaning that they really want to lose that one valence electron to get a full octet.

2. halogens have 7 valence electrons meaning that they just need to gain 1 to get a full octet.

3. Nobel gasses already have a full octet meaning that they don't want to react. (atoms only react to get a full octet)

I hope this helps.  Let me know if anything is unclear.

Answer:

nm

Explanation:

trust me:)

Answer:

Arthropod (3)

Annelids (2)

Cnidarians (1)

Echinoderms (4)

Explanations:

I hope all this helps if u don't understand it let me know.

Answer:

Of course, what we today call atoms can be divided into more elementary particles, but not that many.

Explanation:

Answer:

A. The seeds on the ground are going to grow into new trees.

Explanation:

Trees are renewable resources.

Look at my screenshot:

Answer:

There is no air, wind, liquid water or life on the moons surface.

Explanation:

Answer:

ok i know it wont help now bc this was in 2020 but i did this on my lessons and its: There is no air, wind, liquid water, or life on the moon's surface.

Explanation:

i got all the right except the last one

Answer:

joe.......

Explanation:

mama......

Answer:

need points

Explanation:

Answer: There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly com​posed of basalt.

Explanation:

The crust This is the outside layer of the earth and is made of solid rock, mostly basalt and granite.  Oceanic crust is denser and thinner and mainly com​posed of basalt.

Answer:

The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere .

Explanation:

Answer:

It's C because Metamorphic rocks were once igneous rocks. And, because Gneiss which is a Metamorphic rock has crystals inside of it.

Different rock types appear during rock formation. The best description of foliated metamorphic rocks is that;

Due to the pressure and heat that is exerted on some rock types, there is an alignment or foliation of rocks. The appearance can be described as ribbon-like.

The examples of rocks that fall under this classification are slate, phyllite, gneiss, and schist.

The non-foliated rocks do not show any alignment in their minerals. Examples are; quartzite, marble, and novaculite.

Summarily, option B best describes a foliated metamorphic rock.

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Answer:

A water molecule consists of two hydrogen atoms and one oxygen atom. The three atoms make an angle; the H-O-H angle is approximately 104.5 degrees. The center of each hydrogen atom is approximately 0.0957 nm from the center of the oxygen atom.

Explanation:

Answer:

First is battery acid with a pH of 1, second is stomach acid with a pH of 1.5-3.5 (depends), third is antacid with a pH of 7, fourth is baking soda with a pH of 9, and finally, fifth is household ammonia with a pH of 11.

Here is a picture of the pH levels to better help you understand.

Answer:

b

Explanation:

Answer:

the change in internal energy of the gases is  -3.0924 KJ

Explanation:

The computation of the change in internal energy of the gases is as follows;

Given that

Q = -3.1 KJ

= -3100 J

It is negative as the heat is lost from the mixture

And,

W = + 7.6 J

It is positive as the work is done in the mixture

Now we use the following equation

Delat E = Q + W

= -3100 J + 7.6 J

= -3092.4 J

= -3.0924 KJ

Hence, the change in internal energy of the gases is  -3.0924 KJ

Answer:

See the answer below

Explanation:

The formula for calculating power is such that;

  power = work/time

Two ways to restate the relationship between the 3 variables would be to make time and work the subject of the formula respectively.

1. When time if made the subject of the formula;

 time = work/time

2. When work is made the subject of the formula;

work = power x time

Answer:

B) Na3BO3.

Explanation:

Hello!

In this case, since percent compositions are used to identify the empirical formula of an unknown compound, we can assume we have 54.0 g of sodium, 8.50 g of boron and 37.5 g of oxygen, and we compute the moles of each one:

[tex]n_{Na}=54.0g*\frac{1mol}{23g} =2.35mol\\\\n_B=8.50g*\frac{1mol}{11g}=0.773mol\\\\n_O=37.5g*\frac{1mol}{16g}=2.34mol[/tex]

Now, we divide by the moles of boron as those are the fewest:

[tex]Na:\frac{2.35}{0.773}=3\\\\B:\frac{0.773}{0.773}=1\\\\O=\frac{2.34}{0.773}=3[/tex]

Thus, the empirical formula is B) Na3BO3.

Best regards!

Answer:

Coal

Explanation:

Coal is by far the worst emitter, followed by natural gas, with solar, wind and nuclear all low-carbon.

Coal, a non-renewable energy source releases the most carbon dioxide into the atmosphere.

Energy sources refers to the various sources in which energy for man's needs are obtained.

There are two types of energy sources:

The non-renewable energy sources such as coal release large amounts of carbon dioxide until The atmosphere.

Therefore, Coal, a non-renewable energy source releases the most carbon dioxide into the atmosphere.

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Answer:

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

Since we are finding the new pressure

[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]

From the question

760 mmHg = 1 atm

380 mmHg = 0.5 atm

We have

[tex]P_2 = \frac{0.5 \times 5}{8} \\ = 0.3125[/tex]

We have the final answer as

Hope this helps you

Nucleus is present at the centre of atom. It contains protons and neutrons. It is very small as compared to the atom.

Answer:

It is a part of a cell which controls all the activities in the cells and contains the genetic information of the cell that is to be passed down to the next cell when it reproduces.

Explanation:

It is a part of a cell which controls all the activities in the cells and contains the genetic information of the cell that is to be passed down to the next cell when it reproduces.  

Answer:

the average speed of [tex]V_{av} CO_2[/tex] is 5.24 ×  104 cm/s

Explanation:

The computation of the average speed of a [tex]CO_2[/tex] is as follows:

[tex]\sqrt{average} = \sqrt{\frac{8 RT}{\pi M} }[/tex]

where,

M = Molar mass

[tex]V_{av} = \frac{\sqrt{1}}{M}[/tex]

Given that

[tex]V_{av} \ of\ oxygen= 6.14 \times 10^4 cm/s[/tex]

The molar mass of oxygen i.e. (MO_2) = 31.9988 g/mol

And, the molar mass of CO_2 is  44.0098 g/mol

Now

[tex]\frac{V_{av} CO_2}{V_{av} O_2} = \frac{\sqrt{M_{O2} }}{M_{CO2}}[/tex]

Now place these values to the above formula

[tex]\frac{V_{av}CO_2}{6.14\times 104 cm/s} = \frac{\sqrt{31.9988} }{44.0098}[/tex]

So,

V_av CO_2 is 5.24 ×  104 cm/s

hence, the average speed of [tex]V_{av} CO_2[/tex] is 5.24 ×  104 cm/s

Answer:

A 7.59 mol Ne

Explanation:

The number of moles of Ne in a sample of 4.57 x 10²⁴ atoms of neon (Ne) are 7.59 mol of Ne. Hence Option (A) is the correct option. It can be solved with the help of Mole concept.

The mole, symbol mol, is the SI base unit of amount of substance.

The quantity amount of substance is a measure of how many elementary entities of a given substance are in an object or sample.

n = given number / Avogadro's number

  = 4.57 x 10²⁴ / 6.022 x 10²³

  = 7.59 mol of Ne

Therefore, The number of moles of Ne in a sample of 4.57 x 10²⁴ atoms of neon (Ne) are 7.59 mol of Ne. Hence Option (A) is the correct option. It can be solved with the help of Mole concept.

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Answer

Incidentally, they all form dew but because grass is closer to the soil, which maintains heat longer than the air where tree leaves are found, you will find more condensation in that region. Also, higher up the wind and sun will allow faster evaporation which makes the dew less noticable on tree leaves.

Explanation:

Preferred objects of dew formation are thus poor conducting or well isolated from the ground, and non-metallic, while shiny metal coated surfaces are poor infrared radiators. ... If the wet soil beneath is the major source of vapor, however (this type of dew formation is called distillation), wind always seems adverse.

Answer: it is b

Explanation:

Answer:

6.50 mol

Explanation:

The question is incomplete but I looked it up on the web.

How many moles of water are produced when 3.25 moles of CO₂ are formed during the combustion of methyl alcohol (CH₃OH)?

Step 1: Write the balanced equation

2 CH₃OH +  3 O₂ → 2 CO₂ + 4 H₂O

Step 2: Establish the appropriate molar ratio

According to the balanced equation, the molar ratio of CO₂ to H₂O is 2:4.

Step 3: Calculate the moles of water formed with 3.25 moles of carbon dioxide

We will use the established molar ratio.

3.25 mol CO₂ × (4 mol H₂O/ 2 mol CO₂) = 6.50 mol H₂O

The answer would be metals :)

Answer:

8

Explanation:

u can find it on ur chemistry book

Answer:

C. 8

Explanation:

Check chemistry textbook

Answer:

[tex]\frac{214}{83} Bi[/tex]

Explanation:

In beta emission, a neutron is converted into a proton thereby reducing the neutron:proton (N/P) ratio.

When a beta emission occurs, the mass number remains the same while the nuclear charge increases by one unit. The daughter nucleus is found one place to the right of its parent in the periodic table.

Answer: A

Explanation: