Answers
a) B
b) A
Question 7
a) Iron
b) oxygen, water
c) i) Galvanizing
ii) Painting
Related Questions
Which option correctly describes the pattern of valence electrons on the periodic table? (1 point)
o The number of valence electrons increases from right to left.
O The number of valence electrons increases from left to right.
O The number of valence electrons increases from bottom to top.
O The number of valence electrons increases from top to bottom.
Answers
Answer:
The number of valence electrons increases from left to right.
Explanation: The number of valence electrons increases going across a period, or row in the periodic table, for example, group 1 elements have 1 valence electrons and group 2 elements have have 2.
true or False
sound needs a medium to travel
Answers
Answer:
True or T
Explanation:
Is the correct answer please make me brainliest
Which is smaller 1.44 or 1.2544
Answers
Answer: 1.2544
Explanation:
if you look at the number 1 and 1 are the go to the next number 4 and 2 aren't so 1.44 is bigger while 1.2544 is smaller.
Answer:
1.2544
Explanation:
help asap ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
Answers
Answer:
Option C
Explanation:
Something white solid forms means here is any salt reacted .And it has been reacted with any hydroxide or acid or another salt. And an undissolved solid product formed.which is white.Its totally chemical change
The "clusters" of Democritus are like what kind of material
that we know of today?
Answers
Coffee has a pH of about 5. Therefore, coffee is -
Question 6 options:
neutral
extremely acidic
somewhat acidic
basic
Answers
Answer:
The answer to your question is Basic
Explanation:
pH ranges from 0 to 14, with 7 being neutral. pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic).
I hope this helps!
The atomic number equals blank of blank electrons
Answers
Answer:
The atomic number equals number of protons and electrons
This is true when an atom is in neutral state.
a measure of the ability of an atom in a chemical compound to attract electrons is called
Answers
Can someone help me please I would really appreciated
Answers
Explanation:
whats the question. cause I didn't see it
What type of rock is in the reference image? How do you know?
Answers
Answer:
i think it's a sedimentary rock...
reason:- these are the only rocks containing fossils
Explanation:
brainliest plz
Which statement best explains the difference between polar and nonpolar covalent bonds?(1 point)
Polar covalent bonds give/take electrons, while nonpolar covalent bonds share electrons.
Polar covalent bonds share electrons equally, while nonpolar covalent bonds share electrons unequally.
Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally.
Polar covalent bonds share electrons, while nonpolar covalent bonds give/take electrons.
Answers
Covalent bonding can be defined as the sharing of electrons between two atoms.
The statement which best explains the difference between polar and nonpolar covalent bonds is "Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally"
We have:
Polar covalent bond is a chemical bond in which electrons are shared unequally or unevenly between two atoms. Non-polar covalent bond is a chemical bond in which electrons are shared evenly or equally between two atoms.Therefore, the statement which best explains the difference between polar and nonpolar covalent bonds is "Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally"
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If 84.5 mol of an ideal gas occupies 21.5 L at 305 K, what is the pressure of the gas? pressure: atm
Answers
Answer:
98.367 atm
Explanation:
For this, you must use the equation PV=nRT. Since you are looking for P, rearrange the equation so that P= nRT/V.
Now collect the information you have:
n (mol) = 84.5
R (ideal gas constant to find atm not every case) = .08206
T (temperature) = 305 K (always convert to kelvin)
V (volume in liters) = 21.5
Now Use P= (85.5 mol)×(.08206)×(305 K)/(21.5) to get your answer in atm
Claim: An ecosystem can survive with only producers.
Do you agree or disagree with this claim? Explain your answer. Be sure to include evidence and reasoning.
Answers
Answer:
No.
Explanation:
The reason for this is if everything in an ecosystem was a producer there would be nothing consuming and soon the ecosystem would be overwhelmed by two many products and nothing to consume them. A healthy ecosystem is a balanced cycle that makes sure everything is working properly and everything benefits something else. A food chain of sort is often seen in a balances ecosystem to show how everything is useful and needed. So in answer if there were only producers an ecosystem wouldn't thrive at its full potential, if at all.
I hope this helped! Brainliest if it did? No pressure!
Have a great day! :D
what is the source of the carbon plants use to make organic molecules?
Answers
Answer:
Carbon dioxide serves as the source of carbon,
Explanation:
quotes for climate change
for example ‘’CLIMATE CHANGE IS REAL!’’
‘’SMALL CNAGES CAN MAKE A DIEFFENCE!’’
give me 3 and more
Answers
Answer:
Explanation:
WAKE FOR CLIMATE CHANGE IS NOT FAKE
SAVE THE GLACIERS
HELP THE ARCTIC ANIMALS
When a spoonful of salt is dissolved in a pan filled with water, the water is called the...
Select one:
a. solute.
b. solution.
c. solvate.
d. solvent.
Answers
Answer:
water is called solvent
Answer:
Option d (solvent)
Explanation:
In salt solution, salt is the solute. A solvent is the substance that does the dissolving – it dissolves the solute. In salt solution, water is the solvent
item 3 steel is an alloy containing fe atoms and c atoms. which of the following diagrams best represents the particle-level structure of steel?
Answers
An alloy is obtained when an element is combined with another physically and not chemically. The image that accurately represents steel is the image in which carbon atoms are sandwiched between iron atoms.
Steel is an alloy of iron and carbon. In an alloy, the atoms one element is sandwiched in between atoms of another element in its crystal. Usually, allows are formed to improve certain desired properties of substances. The percentage of carbon included in steel depends on its intended use.
The image that can be used to represent the formation of steel is the image shown in B. In that image, small atoms of carbon are seen sandwiched between larger iron atoms. That is the accurate description of steel.
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C) equally shared and form nondirectional bonds
Explanation:In metals, electrons are free to move as described by the electron sea model. Electrons are shared equally among atoms, and the structure is based on simple close-packed structures that contain no fixed directional bonds.
how is an ionic compound made up of charged particles can be electrically neutral
Answers
Answer:
Ionic compounds are electrically neutral because the charges of the cations and anions that make up the compound cancel each other out. In the case of salt for example, sodium has a charge of positive one, and chloride has a charge of negative one. Together, they neutralize the compound.
Explanation:
a bottle of water contains 20 oz of water. 1oz is equal to 29.57 milliliters. determine how many millimeters are in the bottle of water
Answers
Answer:
591.471 MILLIMETERS
Explanation:
Formula
for an approximate result, multiply the volume value by 29.574
29.574*20=591.471
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If 5 J (joules) of electrical energy is used to power an iron, how many joules of heat and steam should it be transformed into?
Answers
Answer:
maybe 25 joules
Explanation:
please mark me as a brainlist
If 5 J (joules) of electrical energy is used to power an iron, 25 joules of heat and steam should it be transformed into.
What is energy?Energy is referred to by scientists as the capacity for work. People have figured out how to transform energy from one form to another and then use it to accomplish tasks, making modern civilization possible.
Walking and bicycling, driving cars on roads and boats through water, cooking meals on stoves, making ice in freezers, lighting our homes and workplaces, producing goods, and sending astronauts into space all require the usage of energy.
Energy is capable of changing its forms. For instance, a person's body stores chemical energy from the food they consume until they may use it as kinetic energy when working or playing.
Therefore, If 5 J (joules) of electrical energy is used to power an iron, 25 joules of heat and steam should it be transformed into.
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Drag each label to the correct location.
An element’s position in the periodic table provides information about its atomic structure. Use what you know about atomic structure to complete the table. Refer to the periodic table as needed.
Answers
An element is composed of one type of atom with its own unique properties. TRUE OR FALSE
Answers
Answer:
It's true
Hope it helps:-)
Answer:
true
Explanation:
which elements are designated as the alkali metals
Answers
Answer:
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr).
Explanation:
Six chemical elements in Group 1, the leftmost column in the periodic table.
Hope this helps!
Disease caused by virus are more dangerous.Why?
Answers
Answer:
Explanation:
1. Virus's are hard to detect because of their simple construction.
2. Some mutate very easily.
3. It is hard to isolate the virus and kill it without doing damage to the host.
A molecule is made up of more than one element ?
Answers
Answer:
Yes it is
Explanation:
How else do you think nitrogen or oxygen is made?
which molecule is oxidized in the photosynthetic reaction?
Answers
Answer:
Water
Explanation:
Water is oxidized in photosynthesis, which means it loses electrons, and carbon dioxide is reduced, meaning it gains electrons
Which process causes the greatest increase in the distance between particles?
Answers
Answer: The condensation is the process which causes distance.
Bases react with carbon dioxide and from............. and water
Answers
Answer:
I believe the answer is B. Carbonates
Explanation:
The period of the vibrating string is 0.004 seconds. What is the frequency of the
standing wave?
Answers
Answer:4
Explanation:
Write a 125 word summary of what you have learned in "Introducing the Microscope". Be sure to include steps on how to focus, how to solve for magnification, and what a field of view is and how to measure it.
Answers
Answer:
Introduction to Basic Microscopy. Microscopes are specialized optical instruments designed to produce magnified visual or photographic (including digital) images of objects or specimens that are too small to be seen with the naked eye.
Microscope are the important tools which are used by scientist. For example, in material science, medicine, mineralogy and microbiology.
Light microscope is able to send light. Light is being focused in a tight breath whereby that light passes through a sample which later it is able to create an image. This image passes to different lenses which magnifies it until it reaches the camera.
There are different types of microscope for example, Compound light microscope, Simple light microscope, and monocular microscope.
In simple light microscope only one lens which which is being used to magnify an object and it is not able to reach to a higher magnification.
In compound light microscope it uses two lenses to produce image. For example eyepiece lens and objective lens.
Explanation: