Periodic table vocab
Change
Mixtures
100
Simplest pure substance made of only one type of atoms
What is element
100
a substance changes its identity and a new substance is formed - ex: burning, rust, acid/base reactions, dying hair
What is chemical change
100
a mixture that is NOT uniform or the same throughout; ex- salad, trail mix, pizza
What is heterogenous mixture
200
Two or more elements chemically combined - sugar, salt, water, etc
What is compound
200
a substance looks different but is chemically still the same - ex: states changing, cutting paper, breaking glass, cutting hair
What is physical change
200
a mixture that is uniform or the same; lemonade, paint, tea
What is homogenous mixture
300
The number of protons (P+) in an element - found written at the top
What is atomic number
300
shows the number of atoms of each element; ex: H2O, NaCl
What is chemical formula
400
The number of protons(P+) PLUS the number of neutrons (N) - found at the bottom
What is atomic mass
400
left side of a chemical reaction
What is reactants
500
E-; negative charge; mass =0; orbits the nucleus in shells
What is electrons
500
right side of a chemical reaction
What is products
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