A ____ is another name for a group of elements with similar properties
on the periodic table of elements.
Answers
Explanation- There are 18 numbered groups in the periodic table. The elements in a group have similar physical or chemical characteristics and some groups have a specific name, for example group 17 (the halogens).
Answer:
Family
Explanation:
The groups of elements are called families
Related Questions
A mass of 80 g of KNO3 is dissolved in 100 g of water at 50 ºC. The solution is heated to 70ºC. How many more grams of potassium nitrate must be added to make the solution saturated? Explain your reasoning
Answers
50 g more potassium nitrate must be added to make the solution saturated at 70 °C.
Solubility:
It is the degree of dissolved substance at room temperature or 25 °C per \(\bold {g/100\ cm^3}\).
Saturation:
If no more solute or solid substance is dissolved in the solution, then the solution is called saturated.
Saturation increase with the increase in temperature because the kinetic energy of the particles is increased.
Therefore, 50 g more potassium nitrate must be added to make the solution saturated at 70 °C.
To know more about Solubility:
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A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
learn more about Potential Energy :
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The Northern and Southern Hemispheres always have opposite seasons.
A true
B false
How are the poles different than the equator?
A. The poles are colder than the equator.
B. The Sun hits the poles at an angle while the Sun hits the equator head-on.
C. There is great variation in the daytime and nighttime hours at the poles, which is not true for the equator
D. All of the above
Answers
For the second one, d
Hope I’m right! Good luck!
do footballers get paid even though they do not win a match?
Answers
Answer:
However, in general, football players are paid whether they are paid or not. However, it is clear that if they are not on the field, they will not get a win, a goal or more.
Answer:
no
Explanation:
they shouldn't get paid unless they win
List three evidences that show that the Bible is the Word of God.
Answers
Answer:1.God tells us that He is the Author (2 Peter 1:20-21 Open in Logos Bible Software (if available) & 2 Timothy 3:15-17 Open in Logos Bible Software (if available))
1.The Old Testament and New Testament Authors understood they were writing the Word of God. Common Old Testament phrase – “Thus saith the Lord”. The Apostle Peter confirmed the Apostle Paul’s writings as Scripture (2 Peter 3:16)
3.Its Historical Accuracy – as verified by archeology, which has never contradicted the Bible, but only confirms and silences its critics.
Explanation:
Answer:
Many people question who the author of the Bible is and wonder if the Bible is really the Word of God. I want to give you five reasons to affirm that the Bible is God's Word.
The Word of God: Evidence that Scripture is Divine
First, I believe the Bible is the Word of God because of its scientific accuracy. The Truth of the Word of God tells us that God “hangeth the earth upon nothing” (Job 26:7). How did Job know that the earth hung in space before the age of modern astronomy and space travel? The Holy Spirit told him. The scientists of Isaiah’s day didn’t know the topography of the earth, but Isaiah said, “It is [God] that sitteth upon the circle of the earth” (Isaiah 40:22). The word for “circle” here means a globe or sphere. How did Isaiah know that God says upon the circle of the earth? By divine inspiration.
Secondly, the Bible is affirmed through historical accuracy. Do you remember the story about the handwriting on the wall that is found in the fifth chapter of Daniel? Belshazzar hosted a feast with a thousand of his lords and ladies. Suddenly, a gruesome hand appeared out of nowhere and began to write on a wall. The king was disturbed and asked for someone to interpret the writing. Daniel was found and gave the interpretation. After the interpretation, “Then commanded Belshazzar, and they clothed Daniel with scarlet, and put a chain of gold about his neck, and made a proclamation concerning him, that he should be the third ruler in the kingdom.” (Daniel 5:29). Basing their opinion on Babylonian records, the historians claim this never happened. According to the records, the last king of Babylon was not Belshazzar, but a man named Nabonidas. And so, they said, the Bible is in error. There wasn’t a record of a king named Belshazzar. Well, the spades of archeologists continued to do their work. In 1853, an inscription was found on a cornerstone of a temple built by Nabonidas, to the god Ur, which read: “May I, Nabonidas, king of Babylon, not sin against thee. And may reverence for thee dwell in the heart of Belshazzar, my first-born favorite son.” From other inscriptions, it was learned that Belshazzar and Nabonidas were co-regents. Nabonidas traveled while Belshazzar stayed home to run the kingdom. Now that we know that Belshazzar and Nabonidas were co-regents, it makes sense that Belshazzar would say that Daniel would be the third ruler. What a marvelous nugget of truth tucked away in the Word of God!
Explanation:
How does the height of the cliff impact the acceleration (velocity/time) of a cliff diver?
Answers
Answer:
Higher cliffs don't accelerate your fall acceleration is constant during free fall. The pull of gravity decreases infinitesimally at higher elevations, but it pulls you with an equal force from the first second of you jump off until you decelerate when you fall hit the water. hope this helped
A spaceship fires a movement thruster, releasing gases at high pressure.
What are the forces in the force pair for this example?
a) the force the gasses apply to the ship
the force the ship applies to the gasses
b) the force the gasses apply to space
the force the ship applies to the gasses
c) the force the gasses apply to space
the force the ship applies to gasses
d) the force the gasses apply to the ship
the force the ship applies to space
Answers
Is this right?
Meryl is making a collage of pictures for her science class. On one-half of a piece of poster board, she is attaching pictures of the result of adding heat to materials. On the other side of the poster, she is attaching pictures of the result for removing heat from materials. Which of the following pictures should be placed on the side of heat being removed from the material?
a frozen popsicle
baked cupcakes
steam from a pot
melted candy bar
Answers
Answer: It's kind of a subjective question by saying Which of the following pictures should be placed on the side of heat being removed from the material?
Explanation: I'm not entirely sure about this but I would think that it would be baked cupcakes because they had to undergo heat to become "baked", so they are the result of heat.
When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
After you cross the finish line, you slow down and come to a stop, breathing hard. It takes you 10 seconds to come to a stop. What is your acceleration?
Answers
Acceleration = (change in speed) / (time for the change)
Acceleration = -- (speed as you crossed the finish line) / (10 seconds)
How does the agricultural activity most likely affect the surface water of the area?
Answers
Answer:
Agriculture has been the cause of significant modification of landscapes throughout the world. Tillage of land changes the infiltration and runoff characteristics of the land surface, which affects recharge to ground water, delivery of water and sediment to surface-water bodies, and evapotranspiration.
Explanation:
Matthew and his dad are walking along the beach. Matthew runs toward the water and dips his hands in the cool ocean. Then, he walks back to his dad and grabs his hand. “Matthew, your hands are so cold now!” his dad exclaims. Where did conduction occur during this scenario?
A. between Matthew’s warmer body and his now cooler hand
B. between Matthew’s hand and his father’s hand
C. between Matthew’s warm hand and the cool water
D. between Matthew's father's hand and the cooler water
Answers
Answer:
C.
Explanation:
the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
Answer:
C. between Matthews hands and the cold water
Explanation:
because the scenario was when Matthews hand went to the cold water
Please Help Me!!!!!!
Answers
Answer:
C: Electrical to chemical
the electricity turns into chemical energy to light the candle.
What would happen to the digestion process if enzymes were not present
Answers
Answer: It would take 2.3 billion years for the biological reaction without the presence of enzymes. It’s because, without them, your body can’t break down foods so that nutrients can be fully absorbed. Every organ, every tissue, and every 100 trillion cells in our body rely upon the reaction of metabolic enzymes and their energy component.
Explanation:
I hope this helps
Without enzymes, the body would not be able to break down complex carbohydrates, proteins, and fats into their component molecules. This means that these nutrients would not be absorbed by the body and would be excreted as waste.
Additionally, the lack of enzymes would make it difficult for the body to digest and absorb vitamins and minerals. This could lead to malnutrition and other health problems over time.
Overall, the absence of enzymes from the digestive process would severely impair the body's ability to extract nutrients from food and could have negative consequences for overall health and well-being.
If the period of a certain wave (wavelength = 4.5 m) is 2 seconds, what is the speed of the wave?
0.44 m/s
1.1 m/s
9.0 m/s
2.3 m/s
Answers
Answer:
2.25m/s
Explanation:
wavelength=4.5m
period=2sec
frequency= 1/period
=1/2
speed= wavelength×wave frequency
=4.5×1/2
=2.25 m/s
so, none of the options are correct
Answer:
2.3 m/s
Explanation:
I took the test.
Why does a greater mass increase the impact velocity of a parachute.
QUICK I NEED AN ANSWER NOW! Brainliest given to the best answer
Answers
This is called its terminal velocity. Objects with a large surface area such as parachutes or sheets of paper reach terminal velocity much more quickly than objects with a small surface area because air resistance will have that much of a greater impact.
Answer:
A parachute with greater mass has greater drag force. The velocity is therefore less. A bigger parachute therefore takes longer to reach ground.
Will the velocity of the book change as it moves across the surface with NO friction? Explain your answer.
(dont HAVE to explain answer)
Answers
No velocity will not be changed
Why?
According to Newtons 1st law the velocity of a moving object remains unchanged unless a external force affect that.
No. IF the surface is level.
(Explanation withheld by request of the asker.)
When does air become turbulent around a thrown ball?
A:On the smooth side of a ball
B:On the rough side of a ball
C:On the right side of a ball
Will give brainliest
Answers
mountains forming today due to movement of the plates and mountains forming in the past due to movements of the plates would be an example of ________?
a. a plateau
b. an unconformity
c. law of gravity
d. principle of uniformitarianism
Answers
Answer: d.
Explanation:
Which unit measures work?
pound
joule
newton
meter
the lesson is Work and Machines
Answers
URGENT!!
What occurs when the trough of one light wave meets the crest of another lightwave?
destructive interference
constructive interference
wave building
wave destruction
Answers
Answer: destructive interference
Explanation:
name something that magnets has done for you in your life
Answers
Answer:
Magnets have helped me in life by finding lost medal objects, hold up papers.
Explanation:
Fish are not able to regulate their body temperature by producing heat.
How could a fish adjust its body temperature if it were too warm?
speeding up its level of activity
evaporating water from its skin
expelling water from its body
swimming into cooler water
Answers
Answer:
evaporating water from its skin
Answer:
swimming into cooler water
Explanation:
I'LL MARK BRAINLIEST PLZ HELP MEH I NEED IT RN I'LL BE YOUR FRIEND TOO *sniff*
what is a fossil fern providing evidence the continents once were joined (science)
Answers
Lets say a plant native to greenland is in canada (fossilized against canada's shore line) it's proof that at one moment they where actually connecting. <3
Animal remains (of one animal) found on two different continents.
HELP PLEASE and NO links please give the right answer
Answers
This is science :)
"Amber studied a graph of a mechanical wave. If she wanted to find out the wavelength, from which points should she measure"
Answers
Fill in the blank
1. Light from the sun causes the ________ to change.
plant
solar panel
glass
aluminum
melanin
genetic material
2. Light from the sun does not cause the ________ to change.
plant
solar panel
glass
aluminum
melanin
genetic material
Answers
2) genetic material
Describe 3 factors an engineer should take into consideration when choosing material for building the pipes in a pipeline
Gr. 8
Think it has something to do with Viscosity, Density, and Pressure but not sure what
Answers
Answer: 1. Material being transported 2. The temperature of the material being transported 3. How long the pipes will be there (lifespan)
Explanation: 1. - The pipe builder should consider the material being transported to choose the correct material of the pipes to use, so they last long and can hold the material.
2. - Similar to 1, the pipe builder should consider the temperature of the material to choose the correct material of the pipes to use, so the pipes don’t break and function properly.
3. - If the pipe builder uses a material that can hold the material, that’s great! If that material will last a short time, it would not work if the pipes were to be used for a long time.
The things you said before about viscosity, density, and pressure are also correct. The correct answers are mainly talking about factors of the material being used in the pipes.
hope this helped :)
The Moon revolves once around Earth about every 28 days. How many times will the Moon complete all of its phases during one revolution around the Earth?
Answers
Answer:
it is 27.3
Explanation:
Answer: Once
Explanation:
The Moon will complete all of its phases during one revolution around the Earth
How does gravity affect the motions of Earth and the Moon?
Answers
Answer:
The Sun's gravitational pull keeps our planet orbiting the Sun. The motion of the Moon is affected by the gravity of the Sun and Earth. Moon's gravity pulls on the Earth and makes the tides rise and fall.
Answer:
Gravity is making the Earth go around the Sun, it's also making the Moon go around the Earth, and somehow (I don't know how) the Moon's gravity messes with the water on Earth.
Explanation: