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Test Review
| Question | Answer |
|---|---|
| kills bacteria on goggles between labs | germicidal monitor |
| This cannot be heated. We use either 10ml, 25ml, 50ml, or 100ml sizes for our labs. Used to find the volume of liquids. | graduated cylinder |
| supports an oring or test tube clamp, so a bunsen burner can be used. | ring stand |
| measures voltage, current, and resistance | multimeter |
| A chemical reaction that releases energy by light or heat. | exothermic reaction |
| A chemical reaction that absorbs energy from its surroundings. | endothermic reaction |
| Change of a solid to a liquid | melting |
| Temperature in which a substance changes from a solid phase to a liquid phase. | melting point |
| Change from a liquid to a solid | freezing |
| Temperature at which a substance changes from the liquid phase to the solid phase. | freezing point |
| The liquid in which the solute is dissolved to form a solution | solvent |
| This gets dissolved to make a solution | solute |
| Process in which particles inside the liquid as well as those on the surface of the liquid change to a gas. | boiling |
| Temperature at which a substance changes from the liquid phase to the gas phase | boiling point |
| Change of gas to a liquid | condensation |
| Change from a solid phase directly to a gas phase | sublimation |
| form of matter is changed, but not the properties | physical change |
| Process by which a substance becomes a new and different substance | chemical change |
| Ex. of solid to gas | dry ice |
| holding more solute than normal due to adding heat | supersaturated solution |
| no more solute can be dissolved in the solution under normal circumstances. | saturated solution |
| a liquid is below its freezing point without solidification or crystallization | supercooling |
| ability of a substance, the solute, to dissolve in a solvent | solubility |
| giving off heat while changing from a liquid to a solid | exothermic phase change |
| absorbing heat while changing from a solid to a liquid | endothermic phase change |
| a set of chemical symbols showing the elements present in a compound and their proportions | chemical formula |
| simplest type of pure substance. Cannot be chemical broken down any further. | element |
| made of one kind of material having definite properties | pure substance |
| The formula for sodium acetate | C2H3NaO2 |
| Melting point of sodium acetate trihydrate in Celsius | 58 Celsius |
| Base with the number 14 on the ph scale. Used for Heron's fountain activity. | Sodium Hydroxide |
| Acid with the number 3 on the ph scale. Used for Heron's fountain activity | vinegar |
| Indicator used for heron's fountain activity. Turns a base pink if ph is between 8-14. | Phenolphthalein |
| A measure of acidity(acid) and alkalinity (base) in water soluble substances. Its range is 1-14. | PH scale |
| substance with a number 1-6 on ph scale | acid |
| substance with a number 8-14 on ph scale | base |
| 7 on ph scale | neutral |
| (1.8 * Celsius )+ 32 | C to F |
| (Fahrenheit - 32) /1.8 | F to C |
| mass/volume | Density |
| Phase when molecules are close together and not moving around | solid |
| Phase when molecules have more energy and moving around | liquid |
| Phase when molecules have very high amount of energy, spread out, and moving rapidly | gas |
| two-led semiconducting light source | LED |
| Heavy glass object used to demonstrate vacuum | bell jar |
| Example of a substance with the number 7 on the ph scale. | water |
| Volume = pi * radius squared * height | cylinder |
| Used to hold liquids. It has a conical body, long neck, and a flat bottom | erlenmeyer flask |
| Used to hold liquids. Has a round body, single long neck, and a flat bottom | florence flask |
| A circular concave piece of glass used in chemistry | watch glass |
| Starting from the left on the metric conversion chart. This is the third box over. | deka |
| Starting from the left on the metric conversion chart. This is the 6th box over. | centi |
| Starting from the left on the metric conversion chart. This is the 2nd box over. | hecto |
| Starting from the left on the metric conversion chart. This is the 7th box over. | milli |
| Starting from the left on the metric conversion chart. This is the first box. | kilo |
| Starting from the left on the metric conversion chart. This is the fourth box over. | meter, liter, gram |
| Starting from the left on the metric conversion chart. This is the 5th box over. | deci |
| This unit measures the amount of space something takes up. | volume |
| This unit measures distance | meter |
| This unit measures the amount of matter in an object | mass |
| Melting point of sodium acetate trihydrate in Fahrenheit | 136.4 |
| How many centimeters are in 1 inch | 2.54 |
| Experiment run without the variable in order to show that any data form the experiment was due to the variable. (Normal) | Control |
| The one factor being tested during an experiment | independent variable |
| This depends on the independent variable. This is the data collection. Observe and record information. What is suppose to happen. | dependent variable |
| An educated guess | hypothesis |
| This is where you explain the data you gathered. You explain if your hypothesis was right or wrong. | conclusion |
Created by:
tthomps
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