Answer:
A property used to characterize materials in reactions that change their identity. 1, The chemical properties of coal are still incompletely understood. 2, Nevertheless, taken on balance, if you possess unpleasant chemical properties, it pays to advertise
Explanation:
Watch the video below. After the video use the text box to answer the following questions:
1. What is the difference between and autotroph and a heterotroph?
2. What is one example of an autotroph. One example of a heterotroph.
Please help the video isn't necessary for these questions :)
The most useful property of metalloids is their _____.
A. stored energy which is released through combustion
B. being non-reactive with other elements
C. value when used to make precious jewelry
D. varying ability to conduct electricity
Answer:
DDDDDDDDDDDDDDDDDDExplanation:
i just answer this it's corect trust meeeWhich of the following is a problem caused by acid rain?
respiratory problems in humans
is a factor in global warming
makes lakes and streams unsuitable aquatic life
Answer:
Air pollution like sulfur dioxide and nitrogen oxides can cause respiratory diseases, or can make these diseases worse. Respiratory diseases like asthma or chronic bronchitis make it hard for people to breathe.
Answer:
1st one
Explanation:
mark brainliest please
You mix two cleaning chemicals and they start bubbling and releasing a funny smelling gas. First, run because it is poisonous! Second, was that a physical or chemical change? How do you know?
Answer:
it's a chemical change
Explanation:
When two different chemical substances are mixed they are no longer the same and can not be changed back so therefore it's a Chemical reaction.
If an atom does not bond to another, The number of electrons does not change. True or false?
Please help!
(Subject is actually 8th Grade Science But The don't have that... i'm sorry.)
Question:
If you have two objects with different masses about to fall from the same height. Which one will have the greatest potential energy?
Group of answer choices:
A.) Smallest
B.) Largest
C.) Roundest
D.) Flattest
Answer:
I am Going to say the smallest im in 8th grade and i got that right
Explanation:
Which material has the same state of matter after it is mixed with water as it did before it was mixed with water?
A.
carbon dioxide
B.
salt
C.
pepper
D.
sugar
Pepper has the same state of matter after it is mixed with water.
What is the state of matter?State of matter of any substance tells about the physical appearance or the space occupied by the atoms of that substance.
From the given option; carbon dioxide, salt and sugar are soluble in water and changes their state of matter to liquid. But pepper is hydrophobic in nature that means it is not soluble in water, so present in the original state after mixing with water.
Hence, option (c) is correct i.e. pepper has the same state.
To learn more about state of matter, visit the below link:
https://brainly.com/question/16982523
How many moles of Hg are in a thermometer that contains 0.055 mL of Hg?
Answer:
745.8
Explanation:
Answer:
745.8
Explanation:
I hope this helps, and correct I mostly guaranteed is correct.
PLEEASEE HELP ITS PAST DUE AND IM GIVING BRAINLIEST
Which process is an example of a physical change?
a. wood burning in a camp fire
b. iron rusting on a bicycle chain
c. ice melting after a snow storm
d. milk souring because it is old
Answer:
c or d
Explanation:
i dont know which one but it's one of those
can some give me a summary about .Electrostaticen force plz
Answer:
The electrostatic force is also known as the Coulomb force or Coulomb interaction. It's the attractive or repulsive force between two electrically charged objects. Like charges repel each other while unlike charges attract each other. Coulomb's law is used to calculate the strength of the force between two charges.
Explanation:
Which of these can be combined to make a mixture?
a. solid and a liquid
b. two solids
c. two liquids
Answer:
c
Explanation:
you cant mix a rock and a rock together and expect to get a mixture
and you cant mix a rock and water and expect them to mix
so its on logical that it is two liquids
Please help thank it’s a acrostic poem
DOES ANYONE ELS FIN SNUFFLEUPAGUS CREEPY CAUSE I DO.....
Answer:
BROO.... YESSS
Explanation:
Answer:
Yes
Explanation:
They just creep me out
In which ocean zone does a reef most likely thrive?
What is density?
1. a measure of salinity
2. the weight of water
3. the amount per unit volume of a particular material
4. the amount of salt in water
Which metals are so reactive that they are never found as uncombined elements in nature?
A. alkaline earth metals
B. alkali metals
C. rare earth metals
D. transition metals
HEELLPP PLEASE IM BEGGING ILL GIVE BRAINLIEST
Vegetable soup is an example of _____________:
A. an element
B. a compound
C. a mixture
D. a chemical reaction
Answer:
C
Explanation:
You mix different thing together to make a new thing.
What type of cell division is responsible for the formation of the heart, brain and lung cells from the fertilized egg?
Answer:
It must be sex cells
HELP ME PLEASE
T-T thanks
Answer: You Would have to .
Explanation:
Which group of elements has the highest boiling point? * IIIa (13) IIa (2) Ia (1) IVa (14) Transition metals
Answer:
the elements that have the highest boiling is transition metals
The density of Mg is 1.74g/cm3. The density of strontium is 2.60g/cm3. What would you expect the density of Ca to be?
Answer:
1.61 g/cm³.
Explanation:
I REALLY NEED HELP ITS DUE AT 11:59 PM
Answer:
I attached a photo of balanced equations but thats as much as I can help.
Explanation:
What is one advantage of developing energy-efficient technologies?
Answer:
it's simple
Explanation:
For residential buildings, a whole-house approach using a cost-effectiveness criterion can result in savings of 50 percent or more in heating and cooling and 30–40 percent reductions in total energy use.
I hope you understand have a great day :3
Which of the following pH values represents a strong acid?
1
8
13
7
Answer:
1
Explanation:
acid is 0-3 lower numbers
I would appreciate your help! Due today! ( I don't know if this is even chemistry)
Answer:
6+69
Explanation:
A tool might be made of an alloy because the alloy _____.
A. occurs naturally
B. resists rust
C. can bend easily
D. is softer
Your answer is:
B. Resists rust.
A tool might be made of an alloy because the alloy resists rust.
Why?
Iron is a great building material but steel (an alloy made by adding small amounts of non-metallic carbon to iron) is stronger, harder, and rustproof. Aluminum is a very light metal but it's also very soft in its pure form.
Alloy steels have a wide range of special properties, such as hardness, toughness, corrosion resistance, magnetizability, and ductility. Nonferrous alloys, mainly copper–nickel, bronze, and aluminum alloys, are much used in the coinage.
____________________________________________________________
Hope this helps!
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Have a good day.explain why the sun appers to be the brightest star in the sky. relate your explanation with an example such as street lights. this is science
Answer:
The sun is a star but It is the brightest in the sky because it is the closest star to earth.
I don't know how to compare it to street lights though...
Explanation:
Why are lysosomes important?
When a cell is beyond repair, lysosomes help it to self-destruct in a process called apoptosis.
Answer: A lysosome is a membrane-bound cell organelle that contains digestive enzymes soooo. They break down excess or worn out cell parts, they may be used to destroy invading viruses and bacteria. If the cell is damaged beyond repair, lysosomes can help it to self-destruct in a process called programmed cell death, or apoptosis.
Explanation: So that's why it is important