Which statement is true about the elements in the periodic table?
Elements in family 2 are all nonmetals.
Elements in period 4 are all metals.
Elements in period 6 have similar properties.
Elements in family 7 have similar properties.
(Please don't send a link to a different site and just tell me which one it is)
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Answer:
Give the other person brainliest
Explanation:
Related Questions
is the mass of water greater than the mass of two gases
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TRUE OR FALSE: Chromosomes are made up of proteins joined together like beads on a string.
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Answer:
true
Explanation:
:)
Answer:
true
Explanation:
Two parts of the food chain are described below:
Part #1: These organisms are the ending of the food chain.
Part #2: This passes energy to plants and animals.
Which statement is true about these two parts of the food chain? (2 points)
a
Part 1 are consumers, Part 2 is the sun
b
Part 1 are consumers, Part 2 are producers
c
Part 1 are producers, Part 2 is the sun
d
Part 1 are producers, Part 2 are consumers
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Answer:
A: part 1 consumers, part 2 the sun
Answer:
the answer is a
A 50 gram piece of glass with the specific heat of 0.84 J/gºC is heated from 35°C to 46°C. How much heat is added to the glass?
А
11
B
193 J
С
462 J
D
1470 J
Answers
pH is an indicator of how acidic or basic a substance is. The pH scale ranges from 0 - 14, with 7 representing neutral. Acids have a pH below 7; bases, a pH greater than 7. Scientists determine the pH of a substance by using an indicator; indicators change color depending on the pH of a substance. Different indicators work at different pH ranges, as seen in the table above. The transition range of an indicator is the range of pH when the indicator changes from its low-pH color to its high-pH color. If the indicator shows a color between the two, then the pH lies somewhere in that transition range. You have been given a liquid that turns pink in phenolphthalein and blue in thymolphthalein. Tests with methyl violet and bromophenol blue resulted in a violet color. Based on your test results, determine which statements regarding the liquid are accurate. Choose ALL that apply.
A. The liquid is a base.
B. The liquid is an acid.
C. The liquid has a pH > than 7.
D. The liquid is an H⁺ donor.
E. The liquid mostly likely contains OH⁻.
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The liquid is base. A base is a type of chemical that releases hydroxide (OH-) ions, receives protons, or donates electrons in an aqueous solution.
What are Bases?Bases have a few distinguishing characteristics that can be used to recognize them. They can taste harsh, react with acids to generate salts, have a tendency to be slick to the touch (like soap), and can catalyze some processes.
Arrhenius bases, Bronsted-Lowry bases, and Lewis bases are some examples of bases. The French scientist Louis Lémery coined the term "base" in 1717. Lémery used the term to refer to Paracelsus' alchemical notion of a "matrix" According to Paracelsus, natural salts form when a matrix and a universal acid interact.
Although Lémery may have coined the term "base" first, Guillaume-François Rouelle is generally recognized as the father of modern usage.
Therefore, The liquid is base. A base is a type of chemical that releases hydroxide (OH-) ions, receives protons, or donates electrons in an aqueous solution.
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what is the third largest asteroid in the asteroid belt with a diameter of 267 miles
ONLY ONE
ANSWER
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Help me help me please
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Answer:
C. wind
Explanation:
What can you tell about the location of the Sun from this illustration of the Milky Way? A) It is outside of the Milky Way. B) It is near an outer arm of the Milky Way. C) It is on the right side of the Milky Way. D) It is within the Central Bulge of the Milky Way. Hint
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PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....BUT U MUST TYPE EVERYTHING needed ASAP
all I need you to do its to type out these pictures word for word it pretty simple
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Answer:
Other Causes of Extinction in addition to habitat destruction, other human-caused probelms are also threatening many species. These include issues associated with climate change, pollution, and over-population.
Invasive Species as we have learned earlier in the unit, invasive or non-native species can also change an ecosystem. When invasive species enter an ecosystem's dynamic and cause a disruption to the flow.
Habitat Destruction Your habitat can be altered, and you can easily adapt. Most people live in a few different places and go to a number of different schools throughout their life. But a plant or animal may not be able to adapt to a changed habitat.
Humans often destroy the habitats of other organisms. Habitat destruction can cause the extinction of species.
Extinction is the complete disappearance of a species. Once a species is extinct, it can never recover.
Explanation:
Why do people mix up weather and climate?
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Answer:
The difference between weather and climate is a measure of time. Weather is what conditions of the atmosphere are over a short period of time, and climate is how the atmosphere "behaves" over relatively long periods of time.
Explanation:
please mark this answer as brainlest
Answer:
Weather and climate are not the same things, yet we might get confused between the two.
Explanation:
sorry if this does not answer your question
a 2 cm cube made of acrylic has a mass of 9.7 g. What is the density of the acrylic?
Answers
Answer:
here
volume of cube = l^3
=2cm^3
=8cm^3
now,
mass=(9.7÷1000)kg
=0.0097kg
volume=8cm^3÷100=0.08
we know that,
density=mass/volume
= (0.0097/0.08)kg/m^3
= 0.12125kg/m^3
Explanation:
the formula to calculate volume of cube is l^3 so here we find the volume of cube using this formula and then we convert gram into kilogram then convert cm into m then by applying the formula of density we find it density
A 2 cm cube made of acrylic has a mass of 9.7 g. The density of the acrylic is 0.12125 kg m3
What is density?Density is the mass of per unit volume.
[tex]Volume of cube = l^3\\=2cm^3\\=8cm^3[/tex]
mass 9.7 kg, converted into kilograms = 0.0097kg
[tex]Volume \;= \dfrac{8cm^3}{100} = 0.08[/tex]
Calculating the density
[tex]Density = \dfrac{mass}{volume} \\\\\dfrac{0.0097}{0.08} = 0.12125\;kg\;m^3[/tex]
Thus, the density of the acrylic is 0.12125 kg m^3.
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Explain the concept of the conservation of mass during a change in the state of matter.
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Answer: The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Answer:
The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants. this is what I think I hope I didn't get the same answer as anyone else.
Explanation:
A little help please
Answers
Answer: Cell
Explanation: The cell is the most basic unit of life.
Name two positive effects caused by high biodiversity.
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Answer:
Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. For example, A larger number of plant species means a greater variety of crops. Greater species diversity ensures natural sustainability for all life forms.
Explanation:
Answer:
CLIMATE CHANGE AND ECO SYSTEM
Explanation:
what do scientists believe formed the moon's craters and regolith
Answers
Answer:
What is most widely accepted today is the giant-impact theory. It proposes that the Moon formed during a collision between the Earth and another small planet, about the size of Mars. The debris from this impact collected in an orbit around Earth to form the Moon.
Explanation:
Out of metal, Non-metal and metalloids. which one needs contact to transfer heat?
Answers
What are the genotypes and phenotypes of the offspring in this image?
Answers
Answer:
Genotypes: Hh, Hh, hh, and hh
Phenotypes: Short Hair, Short Hair, Long Hair, Long Hair
Have a nice day! ^-^
Explanation:
Genotypes:-Hh, Hh, hh and hh
Phenotypes:-Hh = Hh = May be long hair or short hair
hh = hh = Short hair
So,
Mainly phenotypes are Long hair, long hair, short hair and short hair.
Please help
Will give brainliest
A - 1
B - 2
C - 3
D - 4
E - 5
Answers
Answer:
B-2
Explanation:
In the graph you can so that two of the shapes ae fully black, that means that they are color blind, the half colored ones means they are a carrier but they aren't color blind. So two males in the offspring are color blind.
Help please ASAP just with number 10
Answers
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PLEASE HELP MEEE I WILL MARK BRAINLIST FOR THIS ITS SUPER SIMPLE....BUT U MUST TYPE EVERYTHING needed ASAP
all I need you to do its to type out these pictures word for word it pretty simple
Answers
Other Causes of Extinction
In addition to habitat destruction, other human-caused problems are also threatening many species. These include issues associated with climate change, pollution, and over-population.
Habitat Destruction
Your habitat can be altered, and you can easily adapt. Most people live in a few different places and go to a number of different schools throughout their life. But a plant or animal may not be able to adapt to a changed habitat.
Humans often destroy the habitats of other organisms. Habitat destruction can cause the extinction of species.
Extinction is the complete disappearance of a species. Once a species is extinct, it can never recover.
Invasive Species
As we have learned earlier in the unit, invasive or non-native species can also change an ecosystem.
When invasive species enter an ecosystem they change that ecosystem's dynamic and cause a disruption to the flow.
Climax Community
A climax community is the end result of ecological succession. The climax community is a stable balance of all organisms in an ecosystem, and will remain stable unless a disaster strikes.
Human Activity
It's important to note that human activity has the greatest impact on the amount and quality of wildlife habitat in many areas of the world. Wildlife habitat can be destroyed or its quality diminished as a result of urban growth, agricultural practices, pollution, or habitat destruction.
People can also have a positive impact on wildlife populations through improvement and protection of habitat or ecosystems. Planting trees and shrubs and providing sources of food and water in individual yards is one way people can help wildlife.
Nicolaus Copernicus was a Polish astronomer who is best known for the theory that the sun is near the center of the universe and that the earth and other planets revolve around it. Copernicus did not believe that the planets were influenced by or revolved due to the sun; instead he believed that the sun was located near the center of the universe and that it was this center which influenced those bodies and caused them to revolve. When this theory was first published, the scientific community did not accept it. Which reason BEST explains the reason for rejection of this theory? A) It was not published until his death. B) It was not understood by scientific world. C) It lacked sufficient evidence and explanation. D) It lacked practical examples in supporting theory.
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It is B nevermind I thought it was c but it wasn't.
Answer:
So hey Which one was it ?
Explanation:
pls helps and no files since my school have blocked things like that on my computer
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What is a medium? In science.
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Answer:
A medium is a substance that allows any material to travel through it.
Explanation:
Tectonic activity causes potential energy to build up in the crust. An earthquake occurs when this potential energy is released within the crust. Which statement BEST describes what happens when the energy is released?
Select one:
a. It generates seismic waves that spread out in all directions around Earth.
b. It generates heat waves that affect climate changes around Earth.
c. It generates changes in the magnetic field of Earth.
d. It generates changes in the orbiting speed of Earth.
Answers
Answer:
c. It generates changes in the magnetic field of Earth.
Explanation:
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Answer:
C
Explanation:
Two white powders were mixed together. A chemical reaction occurred, and a yellow powder was formed. What is the relationship between the yellow powder and the white powders?
A. The yellow powder is made up of the same kinds of atoms as the white powders, but the atoms are combined into different molecules. The yellow powder is made up of the same kinds of atoms as the white powders, but the atoms are combined into different molecules.
B. The yellow powder is made up of the same kinds of molecules as the white powders, but the molecules are a different color. The yellow powder is made up of the same kinds of molecules as the white powders, but the molecules are a different color.
C. The yellow powder was released from inside the atoms of the white powders. The yellow powder was released from inside the atoms of the white powders.
D. There is no relationship between the yellow powder and white powders. There is no relationship between the yellow powder and white powders.
Answers
Answer:
A
Explanation:
The answer for the question is A
For a chemical reaction in a closed system, mass cannot be ______________ or _______________. We can say that throughout the reaction mass is _____________.
A rearranged; destroyed; gained
B created; destroyed; lost
C rearranged; created; conserved
D created; destroyed; conserved
Answers
Answer:
D created; destroyed; conserved
For a chemical reaction in a closed system, mass cannot be created or destroyed. We can say that throughout the reaction, mass is conserved.
What is a closed system?
A closed system is a thermodynamic term. It can also be said as thermodynamic system. In a thermodynamic closed system, there is no exchange of mass or energy with the outer environment.
Thus, the correct option is D. created; destroyed; conserved.
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Help ill give brainlist‼️‼️
Answers
Answer: molecules
Explanation:
(06.05 LC)
What makes the results of a scientific experiment accurate? (5 points)
Having multiple trials
Lacking any supporting data
Working in a lab
Using a hypothesis that is always true
Answers
Answer:
having multiple trials
Explanation:
I hope this helps :)
Answer:
the other person is right :)
Explanation:
What is the smallest unit of an element that retains the properties of that element?
A.Eletrons
B.Molecule
C.Neutron
D.Atom
Answers
Answer:
Atom
Explanation:
The smallest unit which maintains an element's properties is an atom.
One difference between a book and a movie is that with a book you are(1 point)
Answers
Answer:
inerpreting an author's words and using imagination to picture events
Explanation:
please mark this answer as brainlest
Answer:
interpreting an author's words and using imagination to picture events