C1 Particles
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卡片预览 (12 张)
what is a PHYSICAL CHANGE?
substance remains unchanged easily reversed
what is a CHEMICAL CHANGE?
new substance made not easily reversed
what is an ELEMENT?`
pure one type of atom
what is a MOLECULE?
pure two/more different/same types of atom chemically bonded
what is a COMPOUND?
pure two/more different types of atoms chemically bonded
what is a MIXTURE?
impure two/more different types of atoms mixed
what are the characteristics of METAL?
conduct heat/electricity a range of melting points malleable shiny
what are the characteristics of NON-METAL?
don’t conduct heat/electricity generally low melting points brittle dull
what is the ATOMIC NUMBER?
proton = #electron
what is the MASS NUMBER?
proton + #neutron
what is an ISOTOPE?
same #proton different #neutron
why do isotopes have the same properties and chemical behavior?
same #electrons on the outer shell