Reactions
Equations
Solutions
Acids & Bases
Radioactivity
100
What is the product in this reaction: C + O ----CO?
CO
100
term for the new substances formed as a result of a chemical reaction
products
100
What is a homogeneous mixture of two or more substances called?
solution
100
Bases have this type of taste
bitter
100
What is the process in which an unstable atomic nucleus emit charged particles and energy?
radioactivity
200
What type of reactions is this: CaCO3------ CaO + CO2
decomposition
200
Term for the substances that undergo change in a chemical reaction
reactants
200
What is the term for a substance whose particles dissolve in a solution?
solute
200
Acids have this type of taste
sour
200
Several cm. of lead are required to stop these rays.
gamma rays
300
What type of reaction is this: 2Na + Cl2 ------ 2NaCl ?
synthesis
300
You balance a chemical equation by changing these.
coefficients.
300
When you dissolve sugar in your iced tea, what is the solvent?
water (tea)
300
Which is more acidic - a solution with a pH of 2, or a solution with a pH of 10?
2
300
What is the term for the time required for one half of a radioisotope to decay?
half-life
400
What type of reaction occurs when one element takes the place of another element in a compound?
single replacement
400
What number is needed ( and where) in order to balance this equation: Cu + O2 -------2CuO
2 in front of Cu
400
Name three physical properties of a solution that can differ from those of its solute and solvent.
Name three physical propertie of a solution that can differ from those of its solute and solvent. conductivity, freezing point, boiling point
400
What type of ion is produced by a base?
hydroxide
400
What are positively charged particles made up of two protons and two neutrons?
alpha particles
500
What type of reaction occurs when two different compounds exchange positive ions and form two new compounds?
double replacement
500
What law states that mass is neither created or destroyed in a chemical reaction?
conservation of mass
500
Name two of the three ways that substances can dissolve in water.
dissociation, dispersion, and ionization
500
What type of ion is produced by an acid?
hydronium
500
What is an electron emitted by an unstable nucleus?
beta particle
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