an element is a pure substance that cannot be broken down into any simpler substances by chemical methods
100
Is a radio a type of EM Spectrum?
yes..
100
What is a proton?
What is a proton?A proton is a part of an atom. The other parts of an atom are the neutron, and electrons
100
What is an electron?
An electron is an elementary particle, and it is the carrier of the negative electrostatic charge
200
What is the element number on an element?
the number on an element is known as the atomic number
200
comes from a lamp in your house
Visible light
200
Are protons and electrons the same on all atoms?
No they are not, the number of electrons of an atom is the same number it has as its atomic number
200
Why are electrons important?
they assist in chemical bonding, and help you identify an atom's valence electrons
200
What is ionization energy?
Ionization energy is defined as the energy needed to remove an electron from a gaseous atom.
300
What element has 12 protons and 13 neutrons?
It is an unstable isotope of Magnesium.
300
What is radiaton?
What is radiaton? is energy that travels and spreads out as it goes...
300
What are protons made of?
They are made of subatomic particles called quarks
300
Why are electrons negative charged?
because without that charge, the positively charged protons would repel the electrons and one another.
400
What element has 26 protons?
The element that has 26 protons is Iron.
400
Give 3 examples of electromagnetic Radiation
Give 3 examples of electromagnetic Radiation,Microwaves, x-Rays, Gamma Rays, Ultraviolet Light
400
Why are electrons and protons attracted to each other?
Because what we call "positive charge" is a source of the electromagnetic field
400
Which element has the most number of electrons?
The element with the largest atomic number will have the largest number of electrons. Roentgenium (111) is the largest named element
400
Why does the ionization energy increase as you go left to right across a row on the periodic table?
The ionization energy is the energy it requires to remove an electron from an atom. As you go across the rows, the number of protons (atomic number) increases which increases the positive charge on the nucleus.
500
Which element has the highest ionization energy?
Which element has the highest ionization energy?Helium He has the highest ionization energy,Ionization energy increases as you go across a period from left to right
500
define the electromagnetic spectrum?
define the electromagnetic spectrum?The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation
500
Is the number of protons and electrons equal in every element?
In a neutral atom the answer is yes.
500
Why do electrons move only outside the nucleus and not inside?
positive charge there are electrons outside the nucleus and this why an atom is said to be neutral
500
Why is the first ionization energy number always positive?
Ionization energy is the amount of energy required to remove an electron from a substance. They're saying that it always requires energy to remove the first electron.