Answer:
In a lab guide, the key results are those that support my working hypotheses or serve to reject these assumptions. Moreover, the key results may also be other discoveries that are important to understand the processes and/or mechanisms investigated in the experiment.
In my experience, the best way to summarize the key results is to create diagrams and illustrations that enables me to study relationships between different data
Explanation:
.
Students in a science lab conducted an investigation. Students recorded the following observations.
Which of the substances produced a chemical change?
Substances 1 and 2
Substances 1 and 3
Substances 1 and 4
Substances 2 and 3
Answer:
It's either Substance 1 or Subatance 4 !
Answer:
Substance 1 and 4
Explanation:
determine the volume of a cereal box that has a mass of 549.98 g and density of 1.69 g/cm3
Answer:
I used a calculator to calculate the volume:
the volume formula is V =m
/ρ
the answer is 325.43195266272 cubic meter, or about 325.43
Explanation:
HELP PLS THIS IS DUE IN 15 MINUTES PLS PLS PLS!!! I WILL MARK BRAINLIEST IWTH THE BEST ANSWER!!!
List 2 Physical Changes & 2 Chemical Changes and explain why.
Answer:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
Explanation:
Answer:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity.
physical changes are boiling, melting, freezing, and shredding.
Explanation:
(Fill in the blanks)
The movement of water into and out of cells is very _____. Cells need water to ____ properly.
Answer:
important, function
Explanation:
Hope this helps!
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Answer: Magma is extremely hot—between 700° and 1,300° Celsius (1,292° and 2,372° Fahrenheit). This heat makes magma a fluid, able to create new landforms. The heat also makes physical and chemical changes to old landforms.
Explanation: Hope this gives you a better idea
Explain how scientist learned about the magnetic poles of the Earth.
Answer:
They learned because they keeped studying they would never give up and if they found something new or interesting they may have just studied it more.
Explanation:
Answer:
probably when something like a compass was accidentally invented Explanation:
What is true for two pieces of iron at the same temperature?
Answer:
The average kinetic energy of their particles is the same.
I hope that is what you are looking for!
Answer:
The average kinetic energy of their particles is the same.
I hope that is what you are looking for!
Explanation:
^^
Choose all the answers that apply.
The sun _____.
a. creates energy from fission reactions
b. creates energy through fusion reactions
c. transfers heat through radiation
d. is made of hydrogen and helium
e. uses its own mass to create energy
Omg I’ve been stressing for the past minutes can someone please help me
Answer:
I think it would be the last answer
Explanation:
PLEASE HELP A GIRLL IN NEED
What type of interaction is taking place when a turtle buries itself in the soil to stay cool?
A. biotic interaction
B. Abiotic interaction
C. Chemical interaction
D. Biotic and Abiotic interaction
HELP ME!!!
Answer:
so I would say abiotic cuz soil helps them cool down plus theres probably minerals in the soil
abiotic and biotic factors of a turtle would be:
biotic: shell, aniamals, plants organsims
abiotic: rocks, minerals, componds,temperature
hope this is right :))
Answer: biotic and abiotic interaction
Explanation: turtle, shell, biotic and soil minerals abiotic
The starting temperature of the hot water was 70.1°C. The starting temperature of the ice sphere was 0.5°C. The final temperature of the dyed water is NOT half way between those numbers. In fact, it's much higher.
Why did this happen?
Answer:
because the temputare seemed to drop a lot.
Explanation:
so maybe there was a cold front that came in over time or over night and the rain was what caused it to drop down...
why is a neutral solution neutral?
Answer:
A neutral solution is neutral if it has the same concentration of hydrogen ions as the hydroxide ions.
Explanation:
Hydrogen ions have a positive charge [H+] while Hydroxide ions have a negative charge [OH-]. Given that a solution has equal amounts of both Hydrogen and Hydroxide ions, the charges cancel each other out resulting in a neutral solution.
1. Kylee has been learning that engineering and technology are beneficial to people. She now sees how things people synthesize are useful. The useful materials that benefit people are synthesized from _______.
A.synthetics
B.natural resources
Answer:
answer is B
Explanation:
natural resources is d answer
Need help ASAP with this question
Answer: noble gasses
Explanation: zoom on on the red section and look at the key for what red means.
need help as soon as possible ill give brainliest!!!!!!!!!!!!!!!!
Answer:
The Answer is Magma
Please Help Me!!
Zn + 2HCl --> ZnCl2 + H2 Which of the following provides the best evidence that this reaction follows the law of conservation of mass?
Before you can solve a problem, the first thing you have to do is Question 2 options:
define the problem
build a prototype
design your solution
test your solution
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In our experiment that will compare how long it will take for 100 ml distilled water to evaporate from a from a 5" diameter container. This will be the control group. For the experiment group, we will use 100 ml of distilled water and dissolve 10 grams of table salt in the water. We will use the same diameter dish for both samples so the same amount of water surface is exposed to the air.
What is the question?
A. Does salt water evaporate when placed in a container?
B. How fast does distilled water evaporate if placed in a container?
C. How long does it take distilled water to evaporate from a 5” diameter container?
D. Does a salt water evaporate in the air faster than distilled water?
Answer:I don’t think this will do much but...
Explanation:I think it is D. You should not listen to me though because I am not sure, I just think it is the more reasonable answer (question).
A student used a portable electric drill to remove screws from a broken wooden table. He noticed that the screws holding the table together were warm to the touch after being removed from the wood. Which statement best explains this phenomenon?
A:Electrical energy from the drill was converted into chemical energy due to conductivity.
B:The process of removing the screw concentrated the thermal energy that was already present in the wood
Answer:
A.
Electricity can travel through metal, such as the screws, creating a conductor.
I need your help.
What is the basis of an organic molecule?
(A). The basic structure is the iron atom.
(B). The basic structure is the potassium atom.
(C). The basic structure is the carbon atom.
(D). The basic structure is a carbon monoxide molecule.
Answer:
I think c
Explanation:
Answer: C
Explanation: Its C because Life is based on carbon, organic chemistry studies compounds in which carbon is a central element. The properties of carbon make it the backbone of the organic molecules which form living matter. Carbon is a such a versatile element because it can form four covalent bonds.
Which human action would most likely increase the nutrients in an ecosystem?
A.building a rock wall
B.fertilizing a cornfield
C.watering a flower bed
D.pulling weeds from a garden
PLS HELP ME
Explain why fuel trucks need to be grounded. What safety precautions are taken to avoid explosions?
At least one sentence pls
trucks need to be grounded for many reasons. One of the safety precautions is they reinforce the tank and put stay back stickers to prevent explosion.
Explanation:
common sense
The safety precautions that are taken to avoid explosions are avoiding direct contact with fuel, smoking near the fuel tank, etc.
What are fuels?Any material that may be made to react with other substances to release energy as thermal energy or to be used for work is referred to as a fuel.
The safety measures which we are taken to avoid explosions are:
Avoiding direct contact with he fuel by the skin.Avoid any use of cloth which is wet with fuel.Avoid smoking near the fuel tanks.Hence above are some safety measure which we used to avoid explosions.
To know more about fuels, visit the below link:
https://brainly.com/question/79954
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The islands in the mid-Pacific Ocean region were formed by
A. wind and water erosion.
B. deposition from currents.
C. volcanic activity.
D. land subsidence.
To see if it works like they want it to, engineers need to Question 3 options:
test their solution
define their problem
do their research
design their solution
Answer:
they need to do their research
Answer:
test their solution, so they'd be sure it would solve what they want it to solve and not cause more problems.
Guys plz help me mee
Answer:
the answer is d 2100 you can plus the 1200m + 900m = to 2100m
Answer:
sooooooo sry but i only know the answer to number 1. It is D
Explanation:
HAVE A TERRIFIC DAY!
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Examples of microhabitats could be a rotting tree stump or a dead animal. List 3 microhabitats.
Answer: Okay!
Explanation: Well then the third thing could be dead plant? You already have 2 other things
Answer:
Examples of microhabitats on the short grass prairie of the Llano Estacado include temporary pools of water, a decomposing log or animal, cryptobiotic soils, lichen growth, under rocks, leaf litter, termite tubes, and the interior of an ant bed.
There are different types of microhabitats in a wood, namely, coniferous forest, open woodland, broad-leafed forest, clearings and glades, smooth barks, rotten wood, damaged barks, canopy, and shrub layer, among many other variations.
determine the volume of a substance given that the density is 2.6 g/mL and its mass 5.5 g
Answer:
I am pretty sure the answer is 10g/cm3 .
Explanation:
determine the volume of a substance given that the density is 2.6 g/mL and its mass 5.5 g
Answer
Density of the substance = 10g/cm3.
Explanation:
