Hazardous Materials
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| biohazard | A living organism or its by-product that is harmful to the health of humans or other living things. For example, human blood is considered a biohazard because it can transmit infectious diseases.
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| clear | Transparent or see-through. A clear substance can be either colored, like food coloring, or colorless, like water.
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| colorless | Having no color.
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| corrosive | The ability of a substance to dissolve or wear away other substances, such as metals or human tissue. Strong acids and bases are corrosive.
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| density | The relationship between mass and volume of a substance; the mass per unit volume, specifically grams per milliliter. Density equals mass divided by volume (d = m/v)
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| evidence | Information that is gained by direct observation or from reliable sources which can be used to inform decision making.
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| flame test | A method of identifying a substance. A flame test is typically conducted by placing a small amount of the substance to be tested on the end of a looped metal wire and holding the looped end in the center of a flame.
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| flammable | Easily ignited.
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| HAZMAT team | An abbreviation for a hazardous materials team; a group of individuals who have the skills needed to investigate, identify, and transport hazardous materials.
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| hazardous | Harmful to the health of humans or other living things because of toxicity, flammability, corrosiveness, reactivity, radioactivity, or infectiousness.
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| indicator | A substance that changes color in the presence of another chemical or group of chemicals. For example, universal indicator is an acid-base indicator that shows by color the pH of a substance.
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| infer | To conclude by reasoning from evidence. For example, if we see a child running toward a school building in the morning as the bell rings, we can infer that the child is late for school.
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| miscible | The ability of substances (usually liquids) to mix together. For example, milk and water are miscible, whereas oil and water are not.
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| mixture | A physical combination of two or more substances. Mixtures do not usually have a fixed composition: the amount of one or more of the substances in the combination can vary.
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| MSDS | An abbreviation for Material Safety Data Sheet, which is a list of the chemical and physical properties of a specific chemical.
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| observe | To see or otherwise detect something.
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| oxidizer | A substance that readily accepts electrons from another substance, often resulting in combustion. Oxygen is an example of an oxidizer.
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| pH | The expression of the acidic or basic strength of a solution. (see rest of definition on hard copy)
number representing a ten-fold increase in hydrogen ion concentration; 14 is the least acidic (or most basic), 7 is the neutral and 1 is th
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| phase | A homogeneous state of matter; either solid, liquid, or gas.
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| physical property | An intrinsic property of a material, such as density, melting point, or hardness
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| radioactive | Capable of releasing energy in the form of particles or electromagnetic waves.
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| reactive | Capable of exploding when exposed to other substances (such as air or water) or emitting toxic fumes when mixed with other substances.
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| simulation | A model or example of a real-life situation or event.
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| solubility | A measure of the amount of a substance that will dissolve in a specified amount of another substance at a particular temperature. Often measured in grams per liter at 25˚ C.
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| toxic | Poisonous; the capability of a substance to cause harm to living systems.
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