Pure substances are
A. alloys and can be represented by one chemical symbol.
B. elements and can be represented by one chemical symbol.
C. mixtures and can be represented by two or more chemical symbols.
D. solutions and can be represented by two or more chemical symbols.
Answer:
a
Explanation:
Which statement is true about the elements in the periodic table?
1.Elements in family 2 are all nonmetals.
2.Elements in period 4 are all metals.
3.Elements in period 6 have similar properties.
4.Elements in family 7 have similar properties.
Answer:
Option 4 is the right of ur question
4.Elements in family 7 have similar properties.
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Answer:
umm sorry but some times do it your self
Explanation:
Answer:
its too much and the people that say download here and put bit . ly blah blah are fake.
Explanation:
Okay, okay. Serious time. What is the difference between electric and mechanical energy? Name 2 examples for each, and give one situation for each.
Answer:
Kinetic Energy can be defined as the energy possessed by the object by the virtue of its motion. The sum of these two energies is often called Mechanical Energy of the System. ... Electric Energy is also a form of these 2 energies: Electric potential energy stored in a charged particle in an electric field.
Explanation:
sorry if im wrong T-T
Plz help ill give brainlist‼️‼️How do molecules become substances???
Answer:
When two or more molecules/atoms join together to create chemical bonds
Explanation:
I learned Physics :)
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Can anyone help me with this since it is a quiz and I am really bad at chemistry!!
Answer:
Down below <3
Explanation:
1. 1 [tex]N_{2}[/tex] + 3 [tex]H_{2}[/tex] ---> 2 [tex]NH_{3}[/tex]
2. 2 [tex]KClO_{3}[/tex] ---> 2 KCl + 3 [tex]O_{2}[/tex]
3. 1 [tex]Na_{3}PO_{4}[/tex] + 3 HCl ---> _ 3_ NaCl + 1 [tex]H_{3}PO_{4}[/tex]
4. 1 [tex]C_{2}H_{6}O[/tex] + 3 [tex]O_{2}[/tex] ---> 2 [tex]CO_{2}[/tex] + 3 [tex]H_{2}O[/tex]
Help please ASAP just with number 11
Answer:
*A frogs response to prey is (innate)* meaning an inborn and natural phenomenon due to their instinct.
what they are saying when they say how time could change that. This could be a number of things, aging, humans feeding them, and running out of their own food from another species being introduced to their home.
Explanation:
:)
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
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.
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.
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.
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.
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.
QUESTION 1
Which term describes the interaction between two animals when one feeds on the other?
A.competition
B.community
C.predator/prey
D.an ecosystem
Draw a labeled sketch of an electric motor to show how it uses electromagnetism to convert electrical energy to kinetic energy.
Assume that an electromagnet and a solenoid have the same number of turns in their wire coil and the same amount of current flowing through the wire. Which device has the stronger magnetic field? Explain your answer.
Answer:
oh lawd i dont know hun
Explanation: