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Scanlan P.S. Review
| Question | Answer |
|---|---|
| What is kinetic energy? | The energy of motion including particle motion |
| How does kinetic (energy) theory explain the movement of particles of solids, liquids and gasses? | Particles are always in motion, the higher the temperature of the substance, the faster the particles move |
| Which particles move the fastest, solid liquid or gas? | Particles in gasses move the fastest of the three common states of matter. |
| Density is the measure of? | The ratio of the mass of a substance to the volume of a substance. |
| The formula used to calculate density is? | Density = Mass/Volume or D=M/V |
| If two immiscible liquids of different densities are mixed, which will settle on the bottom? | The more dense liquid |
| The upward force exerted on an object immersed in or floating in a fluid is called? | Buoyancy |
| What is pH? | Hydronium ion concentration |
| What is the process called by which nuclei are split, releasing large amounts of energy? | Fission |
| What is the process called by which nuclei are combined, releasing large amounts of energy? This happens in the sun. | Fusion |
| What is the name of the group of atoms, elements or compounds that go into a chemical reaction. | Reactants |
| What is the name of the group of atoms, elements or compounds that result from a chemical reaction. | Products |
| When energy (sometimes as heat) is transferred from the reactants to the surroundings (given off), the reaction is said to be? | Exothermic |
| When energy (sometimes as heat) is transferred from the surroundings to the products (taken in), the reaction is said to be? | Endothermic |
| Velocity is said to be speed with? | Direction |
| The change in the location of an object, regardless of speed is called? | Displacement |
| In radioactive materials these are unstable? | Nuclei or nucleus |
| When a solution of an acid reacts with a solution of a base, hydroniumions react with hydroxide ions to form? | Water and salt |
| The process of a liquid becoming a gas is called? | Evaporation |
| The process of a liquid becoming a solid is called? | Freezing |
| The process of a solid becoming a gas is called? | Sublimation |
| The process of a solid becoming a liquid is called? | Melting |
| The process of a gas becoming a liquid is called? | Condensation |
| When atoms are rearranged due to some kind of chemical change, what has taken place? | Chemical reaction |
| When nuclei get too big they become? | Unstable |
| The process of nuclear change in an atom of radioactive material is called? | Nuclear decay |
| In a balanced chemical reaction, the total mass of the products always equals the total mass of the? | Reactants |
| Unlike liquid and gas, a solid is not considered to be? | Fluid |
| Gaining or losing electrons is called? | Ionization |
| The change in distance divided by time is called? | Speed or velocity |
| The change in velocity divided by time is called? | Acceleration |
| Any factor in an experiment that can change is referred to as a? | Variable |
| Half-life is considered to be? | The time required for half a sample of radioactive nuclei to decay |
| When a chemical reaction is taking place you often can recognize a ____ with your nose? | Smell |
| When viewing a distance-time graph, which variable is the dependent variable? | Distance is always dependent on the time that has elapsed. |
Created by:
bscanlan
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