Science study guide questions Flashcards
Elements are made up of one form of what?
One form of atom
What is the smallest particle of an element?
An atom
The atom contains what?
Three subatomic particles: protons, neutrons, and electrons
Quarks are…?
Quarks are tiny particles of protein
What subatomic particles has a positive charge or 1+
Proton
What subatomic particles has a neutral charge?
Neutron
What subatomic particles has a negative charge or 1-
Electron
____ charged atoms are attracted to each other.
Opposite charges are attracted to each other (positive and negative)
Are neutrons present in all atoms?
No. For example, hydrogen has one proton and one electron
Particles surrounding the nucleus have what charge?
A negative charge
What two things can an atom do?
Fuse or combine or split apart during fission
What is released during fission?
Energy is released during fussion
Do like charger atoms repel each other?
Yes. Like charged atoms do repel each other ( positive and positive)
What creates smaller nuclei?
Fission creates smaller nuclei
What defines and isotope?
Same element with different masses are called isotopes
What does the atomic number identify?
Identifies the elements and the number of protons in an atom
What does an atom have to do to become less reactive?
Atoms lose or gain electrons from the outer shell
What does the nucleus in an atom contain?
Protons and neutrons
What do quarks make up?
Forms protons and neutrons
Do elements with the same valence electron have in common?
Similar chemical reactivity
Where does most of an atoms volume come from?
Electrons in motion around the nucleus
What makes up the mass of an atom?
Protons and neutrons. Electrons are to small to make any difference in the mass
How many valence electrons do you need to form chemical bonds?
One of two
If you add one or two MORE valence atoms, what happens?
If it contains one or more, other atoms make it highly reactive
