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Elements, Compounds, Mixtures
Atoms
Chemical equations
Acids/Bases
Potpourri
100
Which is a chemical change? melting freezing change of state metal changing color like rust
metal changing color like rust
100
The 2 subatomic particles in the nucleus of an atom are called
proton and netron
100
Combustion releases heat. Is it exo or endo-thermic?
Exothermic
100
Lye is a cleaner used in bleach. It has a pH of 13 is it a strong or weak acid/base?
Strong base
100
What is the mass of ice if it has density of 0.5 g/mL and volume of 600 mL?
300 g
200
A solid becoming a liquid is called
Melting
200
Will Potassium lose or gain electrons? What is the charge?
Lose 1 electron; charge 1+
200
Balance the Equation MgCl2 + Al ----> AlCl3 + Mg
3,2,2,3
200
Hydrochloric acid has a pH of 1... is it strong or weak, acid/base?
Strong acid
200
The substance that gets dissolved in a solution is called
solute
300
Name 3 things that help solids dissolve faster in a liquid
heat, crush, stir
300
How many valence electrons does sulfur have?
6
300
What type of reaction is this? C2H4 + O2 ----> CO2 + H2O
Combustion
300
Water is called the universal_____________...because it dissolves many things.
Solvent
300
In which nuclear reaction does the atom SPLIT?
Fission
400
Draw the Lewis Dot for Lithium
Li *
400
The particles on the outside of the atom that are negative are called?
electrons
400
What is this reaction called? A + B ---> AB
Synthesis
400
Which has the most H+ ions? lemon pH=2 milk pH=6 soda pH=3
lemon
400
How many neutrons does uranium have?
238-92=
500
Which is a homogeneous mixture? Coffee, Cake, Water, Carbon
coffee
500
What kind of bond does NaCl have?
ionic
500
Conservation of mass says that if you have 5 grams of reactant...you will have HOW MANY?? grams of product?
5 grams of product
500
A substance with alot of OH ions is called a ?
Base
500
What type of nuclear reaction is fueled by stars like our sun?
Fusion