elements, Compounds and Mixtures
What substance is made out of one substance?
Element
what elements is found in air
nitrogen, oxygen
what are the three particles in a atom?
protons,neutrons,electrons
what state of matter has a defined shape or volume?
solid
a force holding atoms together to form molecules
What is a Compound made up of?
2 or more elements
whats a molecule?
2 or more atoms bonded together
where are protons and neutrons located on an atom?
the nucleus
whats a liquid your body needs?
water
What are the three main types of chemical bonds?
Ionic, covalent, and metallic
what's a heterogenous mixture?
A mixture where you can see all the different components
what's the chemical formula for oxygen gas?
O2
what's the charge of a proton?
positive
does gas have a defined shape?
no
what's a example of a molecule with a covalent bond
water
what's a homogenous mixture?
a mixture that you cant see all the parts
what are the atoms in a water molecule?
two Hydrogen, one oxygen
what's the charge of a neutron?
neutral
what state of matter takes the shape of its container?
liquid
Which element would most likely form a positive ion?
sodium
What element could contain seven protons, eight neutrons, and seven electrons?
oxygen
what's the symbol for gold
Au
whats the charge of a electron?
negative
what gas do we breath?
oxygen
what bond is the strongest
Ionic bond