PLEASE HELP!!! I will mark Brainliest!!! How could you know if two substances were the same based upon 2 chemical reactions?
Answer:
Observing what the substance looks (color, size, texture) or smells like (odor). Objects can be made up of the same substance, but they differ in the properties of size, mass, and volume.
Explanation:
The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories. Some reactions will fit into more than one category.
Answer:
1.Color Change.
2.Production of an odor.
3.Change of Temperature.
4.Evolution of a gas (formation of bubbles)
5.Precipitate (formation of a solid)
Movement caused by warmer fluids rising and cooler fluids sinking is called ______________.
Answer:
I think it's Convection current.
Hope that helps. x
Answer: Convection is the process of warm fluids rising and cooler fluids sinking. Inside the Earth, convection is powered by heat mostly from the core. The slow circulation of rock in the mantle moves the tectonic plates at the surface.
Explanation: Can I have brainliest
In 3-5 sentences, explain the role of the digestive system in animals, as well as how the system works.
Answer:
Function. The primary functions of the GI tract include prehension of food and water; mastication, salivation, and swallowing of food; digestion of food and absorption of nutrients; maintenance of fluid and electrolyte balance; and evacuation of waste products
hope it helps
The process of digestion of food in animals or ruminants is known as ruminations. The process includes chewing of food, swallowing, digestion, absorption, and evacuation of food.
The role of the digestive system in animals?Ruminants are mammals that eat plants. They have 4 chambered stomachs that help digest food. the process of digestion is through the extract of nutrition from the food they consume.
The process includes prehension of food and water; mastication, salivation, and swallowing of food; digestion of food and absorption of nutrients; maintenance of fluid and electrolyte balance; and evacuation of waste products.
Learn more about the digestive system of food in animals here:
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13. will any of the bulbs light if you open the switch?
14. which bulbs would continue to shine if bulb 1 broke? which would shine if bulb 2 broke instead? Explain.
Answer:
14.None would shine if bulb 1 broke
Explanation:
Bulb one connects all the other bulbs to the switch. If bulb 2 broke instead only 1 and 3 will shine because bulb 2 is not connected to bulb 3. all the bulbs should light when the switch is on.
I dont think I actually got this right pls dont take my answer for fact.
Name the following compounds:
a. NaBr
b. MgCl2
C. Lil
d. Cao
e. CuBr2
f. Feo
WHOEVER ANSWERS FIRST WILL BE BRAINLIEST AND WILL GET 5 STARS
Answer:
a. Sodium bromide
b. Magnesium chloride
c. lithium iodide
d. calcium oxide
e. copper bromide
f. iron oxide
PLEASE ANSWER ASAP
What is the best description of cirrus clouds?
High level (altitude) clouds that are white and wispy like horses tails.
Low level (altitude) clouds that are wispy and made of ice crystals.
Middle level (altitude) clouds that are thick and spread out like a blanket.
Middle level (altitude) clouds that are white and puffy with flat bottoms.
Question 6 (1 point)
Which processes of the water cycle involve the movement of water in the liquid state?
Question 6 options:
evaporation and precipitation
surface runoff and condensation
precipitation and surface runoff
condensation and evaporation
Question 7
What is the name for raindrops that freeze as they fall through the air?
dew
sleet
rain
hail
Question 8
The gas that is most abundant in the atmosphere is ________.
oxygen
nitrogen
water vapor
trace gases
Question 9
In which layer is the ozone that absorbs harmful UV radiation waves?
mesophere
stratosphere
thermosphere
troposphere
Question 10
Air pressure increases as altitude (elevation) ______________?
Question 10 options:
decreases
increases
stays the same
Answer:
Low level (altitude) clouds that are wispy and made of ice crystals.
precipitation and surface runoff
Hail
Nitrogen
Stratosphere
Decreases
Please Award Brainliest!
Answer: Low level (altitude) clouds that are wispy and made of ice crystals.
precipitation and surface runoff
Hail
Nitrogen
Stratosphere
Decreases
Which two changes of state can occur when a substance gains thermal energy A sublimation b depositation c condensation and d vaporization
Answer:
b
Explanation:
Answer:
A and D
Explanation:
I got it on my test
I need help with this
Answer:
The mass and physical structure of the body has changed.
The amount of molecules has changed and formed a new substance.
Explanation:
Hope that I helped you!
The magnetic field of an object exerts a force on any magnetic object around it.
True or False
Answer: True
Explanation: this is true
what do drumlins tell us about glaciers
pros and cons about making aluminum?
HELPPP PLEASEEEE
Pros: easy to make,Cheap, Flexible
Cons: Cheap and flimsy, easy to break
need help ASAP
Write a sentence that begins an adjective phrase. Be sure to punctuate it properly!
The magnetic field of an object exerts a force on any magnetic object around it.
True
or
False
Many businesses are using infrared thermometers to check customer's temperatures as they enter. What are the benefits of using these thermometers? (Select all that apply.)
They check temperature using thermal energy waves that people give off.
They don't have to touch the person to accurately find their temperature.
They check temperature using UV light that people give off.
They have to touch a person to accurately find their temperature.
Answer:
Pretty sure B is one of them.
Explanation:
plz download the doc and answer its due in 20 mins like bro wth
Answer:
and how do we know this is not a virus
Explanation:
sorry dude im just saying
Answer:
I agree with the comment above
sorry
Explanation:
if we cannot see oxegyn, does that mean that fish do not see water?
Answer:
*Brain blows up*
Which is NOT needed to START a wildfire.
1. Wind
2. dry debris
3. oxygen
4. unattended campfire
I'm trying to see if I'm correct, I think it's Dry Debris.
Answer:
you are correct
Explanation:
Answer: no oxygen is the wright answer
Explanation:
Because it only helps to burn a fire it does not make fire
How do scientist categorize the electromagnetic spectrum?
Into six sections based on frequency.
Into seven sections based on frequency.
Into six sections based on amplitude.
Into seven sections bases on amplitude.
Answer:
Into seven sections based on frequency
Explanation:
There are 7 em spectrums from radio waves, to infrared waves, to gamma rays listest in order from lowest to highest frequency.
*Name three ways the organisms in a food web get energy.
*What are some ways the organisms in a food web use energy?
*What are some ways individual cells in an organism use energy?
*What do you have in common with other living things in a food web?
Answer:
1.)photosynthesis, chemosynthesis, and the consumption, this is three ways how organisms in a food web gets energy.
2.)Cells use energy in order to grow, regulate metabolism and reproduce. This energy is obtained from a source such as food molecules or light from the sun, and through processes like glycolysis, the citric acid cycle and oxidative phosphorylation, an energy-rich molecule is then created. The cell can then use the energy in the protein molecule to help it function.
3.)Food webs vary according to habitat, but all food webs have some things in common. Primary producers make up the base of a food web. Phytoplankton . Consumers cannot make their own food so they need to get food from other sources. This means that we are close to being a consumer because we cant make up our own food and we have to get other food from animals and plants and our drinks from many things that go through the food web.
Explanation:
Help plz Noo Links Bots Or scams. If a chromosome folds, how is transcription prevented?
Question 2 options:
The DNA region is easily accessible.
The DNA region is not easily accessible.
The RNA region is not easily accessible.
The RNA has already been made.
Answer:
Regulatory sequences are bound tightly and specifically by transcriptional regulators, proteins that can recognize DNA sequences and bind to them. The binding of such proteins to the DNA can regulate transcription by preventing or increasing transcription from a particular promoter.
Which type of electromagnetic energy must be used carefully in medicine so it does not damage living tissue?(1 point)
low frequency waves
visible light
radio waves
gamma rays
Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, gamma rays is used carefully in medicine without damaging living tissue.
What is electromagnetic wave?Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave.
There is a relation between energy of wave. frequency of wave, and wavelength of wave
Mathematically,
E=hc/λ
where,
E = energy of electromagnetic wave
h is planks constant having value 6.67×10⁻³⁴js
c is speed of light that is 3×10⁸m/s
λ is the wavelength of electromagnetic wave
There are many uses of electromagnetic radiations in medical field. Gamma rays are used to kill the dead cells from e.g. cancer but they don’t destroy the living cells as gamma is only a wave.
Therefore, gamma rays is used carefully in medicine without damaging living tissue.
To know more about electromagnetic wave, here:
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im giving brainliest
Answer:
a
Explanation:
just needed the points, sorry
Answer:
I'm confused what is this?
Explanation:
1. What is the affect of increasing the temperature of the water?
2. What happens when you add pollution to the water?
3. Can coral survive bleaching?
4. What is coral?
Answer:
1. lower levels of dissolved oxygen due to the inverse relationship that exists between dissolved oxygen and temperature
2. water pollution can cause water to become toxic to humans and the environment.
3. corals can survive a bleaching event but they are under more stress and are subject to mortality.
4. corals are marine invertebrates within the class anthozoa of the phylum Cnidaria.
Answer:
The answer to #1 is the water molecules spread out and move faster.
The answer to #4 is a tiny soft-bodied animal that typically lives within a stony skeleton grouped in large colonies
What class of lever is shown below?
Question 3 options:
First Class Lever
Second Class Lever
Third Class Lever
Forth Class Lever
Why do scientists often use melting point and boiling point to identify substances?
Answer:
Melting or boiling point is another property that scientists can use to identify a substance. Melting point is the temperature at which a substance changes from solid → liquid. Boiling point is the temperature at which a substance changes from liquid → gas.
Explanation:
