Matter
Changes
Atoms & Periodic Table
Compounds
Reactions
100
This is the only type of homogeneous mixture.
What is a solution?
100
These are four things that MAY indicate a chemical change.
What are: color change, odor change or bubbles given off without a temperature change, a precipitate forms, temperature change without a heat or refrigeration source, burning, the starting material is used up, a material with new properties is formed, the change is difficult to reverse.
100
The order of electrons (the negative particle) in orbit in the first four shells if they were full is this.
What is 2-8-8-2.
100
This is the type of compound that contains a metal.
What is an ionic compound?
100
This is the name of the starting substance(s) in a chemical reaction.
What is a reactant?
200
This is the type of mixture with the smallest particles. It is nearly homogeneous but will settle out if it is forced to, with a centrifuge.
What is a colloid?
200
These are three chemical properties (cannot be observed without making a chemical change in the substance).
What are toxicity, reactivity with water or oxygen or acid, stability, pH, combustibility, ...
200
This is equal to the period number for any element.
What is the number of electron shells?
200
These are three properties that molecular compounds have in common.
What are: 1) can be solid, liquid, or gas at room temperature 2) not always water soluble 3) not as hard as ionic compounds 4) sometimes crystalline 5) melt and boil at lower temps than ionics
200
This is the type of reaction that gives off heat. The products can sometimes be noticeably warmer than before. They could even burst into flame.
What is an exothermic reaction?
300
These are two types of pure substances.
What are elements and compounds.
300
This is a type of observation that gives a number or measurement, NOT like the color, taste, smell etc.
What is a quantitative observation?
300
This is the most inert family (column) of elements on the periodic table, AND their family number.
What are the noble gases. Family #18.
300
This is the first family's name and the number of valence electrons for atoms in that family.
What is the alkali metals, and what is 1 electron?
300
These are five things that can speed up a chemical reaction.
What are: a catalyst, warmer temperature, higher concentration of reactants, more surface area to react, and mixing.
400
These are two examples of heterogeneous mixtures.
What are suspensions and mechanical mixtures. Colloids could be included too, although they are sort of borderline.
400
These are the two things that GUARANTEE a chemical change.
What are: energy given off or absorbed, and new pure substance(s) created.
400
These are the particles in a nucleus, their charge, and their relative mass (heavy or light, compared to electrons).
What are protons and neutrons? Protons are + and Neutrons are 0. They are both heavy relative to electrons (about 2000 times heavier).
400
This is the type of compound that uses mono or di or tri etc in the naming
What is a molecular compound?
400
This is a natural catalyst made by a living organism.
What is an enzyme?
500
This is something added to liquids to help other liquids mix and stay mixed.
What is an emulsifying agent?
500
BONUS!!! Both teams get points.
BONUS!!
500
This is the difference between an isotope and an ion.
What is isotopes have more or less neutrons than average, while ions have more or less electrons than neutral charge.
500
This is the chemical name for the formula MgO2.
What is magnesium oxide. (not dioxide. MgO2 is an ionic, so it doesn't use mono, di, tri....)
500
This is a coating of zinc on a metal, that inhibits corrosion.
What is galvanization?
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