week 2: building blocks Flashcards
atoms, DNA, proteins ect.
what is an Atom
building blocks of matter
what 3 smaller particles is an atom composed of?
- Protons
- neutrons
- electrons
is a proton positively, neutrally or negatively charged?
Positive
is a electron positively, neutrally or negatively charged?
negatively
is a neutron positively, neutrally or negatively charged?
uncharged
what charge does a atom have?
0
where are protons located in an atom?
nucleus
where are electrons in an atom?
outside nucleus in ‘shells”
where is a neutron in an atom?
nucleus
how can atoms become stable?
gaining, losing or sharing electrons
what charge does the atom become if an atom gains an electron to become stable?
negatively
what charge does the atom become if an atom loses an electron to become stable?
positively
what charge does the atom become if an atom shares an electron to become stable?
equally/unequally
definition- Chemical Bonds
chemical interactions that hold or attract atoms together
3 main types of chemical bonds?
- Ionic
- Covalent
- hydrogen
