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h An atom has which of the following? - protons, neutrons, electrons
The states of matter include which of the following? - solid, liquid, gas, plasma
Endothermic reactions do which of the following? - absorb energy
Exothermic reactions do which of the following? - release energy
What is a heterogeneous mixture? - two or more substances that are variable and not uniform in
composition
What is a homogeneous mixture? - two or more substances that are uniform in appearance
Which of the following is good definition for a compound? - two or more substances that are chemically
combined
Which of the following is good definition for a mixture? - two or more substances that are physically
combined in the same container
The pH of an acid is which of the following? - 1 to 6 pH (juices, stomach acid, citrus)
The pH of a base is which of the following? - 8 to 14 pH (cleaning products)
Entropy - Delta S the amount of disorder
Enthalpy - Delta H the amount of heat