Answer: I believe this is the answer: The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
Good luck on assignment! :)
Answer: The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements. Every element in the first column (group one) has one electron in its outer shell.
Explanation: :)
What reaction type is MgCl2 ---> Mg + Cl2 ?
a. Synthesis
b. Single Replacement
c. Double Replacement
d. Decomposition
Answer:
A.Synthesis
Explanation:
What reaction type is MgCl2 ---> Mg + Cl2 ?
a. Synthesis
b. Single Replacement
c. Double Replacement
d. Decomposition
Answer
A. Synthesis.
The first step in the disintegration of uranium is 238U →234Th+ ? . What particle is emitted in this reaction?
Your answer:
alpha
beta
gamma
An alpha decay is "a type of radioactive disintegration in which some unstable atomic nuclei dissipate excess energy by spontaneously ejecting an alpha particle".
What is radioactive disintegration?Radioactive disintegration is "the process by which an unstable atomic nucleus loses energy by radiation".
What is an atomic nucleus?An atomic nucleus is "the small, dense region consisting of protons and neutrons at the centre of an atom".
What is an alpha-particle?An α-particle is "a helium nucleus. It contains 2 protons and 2 neutrons, for a mass number of 4".
238U → 234Th+4He
Hence, an alpha particle is emitted in this reaction.
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Match the vocabulary term with the correct definition.
Answer:
I think it's a possible explanation for a set of observations
Answer:
(1) Hypothesis - a possible explanation for a set of observations. (2) Observation - use of our five senses to gather information (data). (3) Scientific inquiry - the process of continuous discovery and building of knowledge in the world of science. (4) Interpret - to understand according to an individual's belief. (5) Assume - to suppose as a fact.
Which of these are examples of polygenic traits? blood type in humans and birth weight in calves birth weight in calves and eye color in humans eye color in humans and blood type in humans flower color in snapdragons and birth weight in calves ASAP
Answer:
birth weight in calves, flower color in snapdragons
Explanation:
That should be correct I think if I remember correctly
In a solution of a carbonated beverage, what is the dissolved carbon dioxide?
A. the solvent
B. the solute
C. the precipitate
D.saturated
Carbonated beverage contains dissolved carbon dioxide and water, out of which water is solvent and carbon dioxide is solute and other sweeteners are also solute.
What is solution?Solution is a homogeneous mixture which contain two component that are solute and solvent . Solute is the amount of component which is in small amount whereas solvent is a component which is in large amount
Example: If we take sugar solution then the amount of sugar is small that is solute whereas water is in large quantity which is solvent. It is not necessary that water will be always solvent or liquid will be solvent, solid and gas can be the solvent too.
In a solution of a carbonated beverage, water is solvent and carbon dioxide gas is the solute as it is dissolved in water. Thus carbon dioxide is solute in carbonated beverage.
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The Dust Bowl was a time In the 1930s when prairie states in the Midwest had farmlands torn apart by wind erosion and storms. This disaster caused food shortages and financial hardship. What practice is most helpful to prevent another similar tragedy?
A. no-till farming to allow roots to hold soil together
B. over watering of fields to keep soil wet
C. terrace farming by putting walls up on hills
D. agricultural reform to change the types of crops planted
Answer:
C
Explanation: The dust bowl killed many crops resulting to low nutrients
6. Which substance is a product of fermentation?
A. oxygen
B. sugar
C. alcohol
D. nitrogen
What would be an appropriate tool to measure the temperature of water? Question 1 options:
A. ruler
B.triple beam balance
C. graduated cylinder
D. thermometer
Answer:
Thermometers
Explanation:
To accurately use and read a thermometer to measure water temperature. Thermometers are tools that are used to measure temperature
Answer:
Its D.
Correct me if I'm wrong.
need help asap 20 points
Answer:
The answer to the problem is A because the velocity of the plane changes when they turns it
Explanation:
According to the video, what are some products invented directly by Chemists, or through their basic research? Check all that apply. drugs fibers marketing services paints cosmetics electronic components building designs
answer:
- drugs (a)
- fibers (b)
- paints (d)
- cosmetics (e)
- electronic components (f)
A, B, D, E, F Drugs, Fibers, Paints, Cosmetics, Electonic Components
I got it right on edge 2022
can you please help. I don't know how to do it.
The area used to be covered by an ocean
Please help with this question!
Answer:
A) potential energy is stored energy. Kenetic energy is energy of motion.
According to the video, what are some tasks Environmental Scientists and Specialists perform? Check all that apply. performing lab and field tests designing and monitoring waste-disposal sites observing zoo animals reviewing volunteer applications tending sick animals preserving water supplies reclaiming contaminated land and water
The tasks that environmental scientist and specialists perform is to performing lab and field tests designing and monitoring waste-disposal sites preserving water preserving water supplies reclaiming contaminated land and water.
What are tasks that environmental specialists do ?Environmental specialists always works to preserve nature and they do tasks to conserve the habits of animals and plants.
Based on the information provided, the tasks that Environmental Scientists and Specialists perform include: they are
Performing lab and field testsDesigning and monitoring waste-disposal sitesPreserving water suppliesReclaiming contaminated land and water.Therefore, the correct options are:
Performing lab and field tests
Designing and monitoring waste-disposal sites
Preserving water supplies
Reclaiming contaminated land and water
Observing zoo animals and reviewing volunteer applications are not mentioned as tasks performed by Environmental Scientists and Specialists in the video.
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Help please please help please
Answer:
I don't fully understand what this is about...
Explanation:
sorry :(
Science question please help
Answer:
I think coastal region.
Answer of all please
Hope it helps!<3
When an earthquake occurs, two different types of waves are generated. These waves are called P waves and S waves. Examine the diagram, which shows how the waves travel through Earth. Which statement provides the best evidence of Earth’s structure, based on the information in the diagram?
A. The bending of S-waves shows that Earth has both an outer and an inner core.
B. Earthquakes provide no information because they cannot be detected all over Earth.
C. S-waves do not travel through liquids, so the evidence shows that Earth has an outer core layer made of liquid.
D. P-waves do not travel through liquids, so the evidence shows that Earth has an outer core layer made of liquid.
Answer:
Since S-waves do not travel through liquids, the evidence shows that Earth has an outer core layer made of liquid.
What Science and Math jobs paid a median of more than $90,000 per year in 2011? Check all that apply. Physicists Food Science Technicians Political Scientists Museum Technicians and Conservators Mathematicians Computer and Research Information Scientists Mathematical Technicians
Answer:
I’m pretty sure it’s: Percent distribution of employment in the professional, scientific, and ... Thus, the use of MA rather than city data in Forest and conservation technicians.
Explanation:
It’s just an answer sorry if it’s wrong
Answer:
Answer is below:
Explanation:
VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
help will mark brainlest!
Why does the Earth spin faster at the equator than the poles?
a
Due to the temperature differences on Earth, the land/sea near the equator goes at a faster rate. The Earth spins faster there only during the summer months.
b
The Earth is much wider at the equator than at the poles. It must cover a larger distance in the same amount of time (24 hours).
c
Due to the tilt of the Earth on its axis, the equator gets more sunlight -- therefore making it spin faster.
Answer:
Specifically, Earth rotates faster at the Equator than it does at the poles. Earth is wider at the Equator, so to make a rotation in one 24-hour period, equatorial regions race nearly 1,600 kilometers (1,000 miles) per hour. Near the poles, Earth rotates at a sluggish 0.00008 kilometers (0.00005 miles) per hour.
Which statement about the sun's energy is correct?
A. It is entirely re-radiated back into space.
B. A part of it is destroyed by greenhouse gases.
C. A part of it is absorbed by atmospheric gases.
D. It makes Earth too hot for plants and animals to survive.
Answer:
C. A part of it is absorbed by atmospheric gases.
Explanation:
brainiest plz
The statement about the sun's energy is correct is a part of it is absorbed by atmospheric gases. Hence option C is correct.
What is atmosphere?Atmosphere is defined as the layer of gases kept in place by Earth's gravity and forming its planetary atmosphere. There are several minor layers in addition to the five major ones that make up Earth's atmosphere. The primary layers are, from lowest to highest, the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.
Ozone (O3), which is present in the upper atmosphere, absorbs a sizable part of the Sun's UV radiation (the stratosphere). The Earth system does not become hotter as a result of solar radiation that Earth's surface or atmosphere reflect back into space. Heat is produced as a result of absorbed radiation.
Thus, the statement about the sun's energy is correct is a part of it is absorbed by atmospheric gases. Hence option C is correct.
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I need help asap
Differences in air pressure help cause hurricanes to form.
True
False
Answer:
t
Explanation:
Melvin is exploring the different kinds of changes that can happen to substances. After reading about the kinds of changes that occur, he saw some rust on a pipe that was going into his house. What kind of change is the formation of rust?
A.reactant
B.physical
C.chemical
Answer:
It is B. physical.
Explanation:
The rust on the pipe is something causes by something, which mean it is physical. Hope this helped you out!!
Have a wonderful day! :D
How does the existence of the Gulf Stream affect the climate of Europe and the North Eastern US?
Answer:
The strong current of warm water influences the climate of the east coast of Florida, keeping temperatures there warmer in the winter and cooler in the summer than the other southeastern states. Since the Gulf Stream also extends toward Europe, it warms western European countries as well.
In a solution of a carbonated beverage, the water is the _______.
A. solute B. solvent C. saturated D. precipitate
Answer: B. Solvent
Explanation:
Answer:
B. Solvent
Explanation:
It dissolves the components added as solute to make the beverage.
Explain what an induced current is.
please help me with at least 2 sentences.
Explanation:
If a coil of wire is placed in a changing magnetic field, a current will be induced in the wire. This current flows because something is producing an electric field that forces the charges around the wire.
What could Alfred Wegener not explain about his theory?
How climate changed over time
How and why the plates moved
How organisms traveled
How the plates formed
Explanation:
correct correct me if I'm wrong I'm pretty sure it'sB. how and why the plates moved
In order for an organism to move, which of the following energy transformations must happen in its cells?
Light energy is transformed into chemical energy.
Mechanical energy is transformed into solar energy.
Sound energy is transformed into light energy.
Chemical energy is transformed into kinetic energy.
HELP!!
This is called ____________when pressure builds up until gasses can no longer escape this substance destroys everything in its path.
Fill in the blank!
I need this ASAP please
Answer: C
Explanation:
Velocity is displacement over change in time. It’s a vector quantity, so velocity must include direction. You’re changing the direction, but the speed stays the same, because you are still going 20 km per hr