1. Unit E Test Review

2. 1). Liquid tends to be more dense than what? Give both answers. – Gas and plasma 2). Metals conduct ________ well? – Electricity (and/or heat) 3). Explain the difference between mass and weight. – Various 4). What are the 4 states of matter that we have discussed. List them from lowest to highest density. – Plasma, gas, liquid, solid 5). What are the 4 properties of matter? – Volume, density, mass, weight

3. 6). Describe the structure of an atom. Be as specific and detailed as possible. – Protons, neutrons in the center, electrons in rings on the outside; nucleus 7). Name an element found on the periodic table. – Various 8). How do you form a compound? – Put 2 or more elements together 9). How do you break apart compounds? – Chemical reactions and/or heat 10). The tiny, very dense body in the atom’s center is called the ________. – Nucleus

4. True or false: a mixture is a type of solution. – False (a solution is a type of mixture) A substance that is completely dissolved throughout is called a ___________. – Solution Give an example of a suspension – Dirt & water; oil & vinegar; Italian dressing; etc. What’s the difference between an aerosol and a foam? – Aerosol = air pushes particles in a wide stream. – Foam = gas spread through a liquid in a small trail. Name one method that can separate a mixture. – Heat; physical means (tools)

5. Matter is determined by the ______ of its particles. – Movement (speed) If a substance can take the shape of whatever container it’s in, which state of matter is it? – Liquid What is a big clue that a chemical change has occurred? – Cannot be undone; a new substance is created. What is a big clue that a physical change has occurred? – Can obviously see the difference with your eyes; change in size, shape, or state.

6. If a metal spoon is put in a pot of boiling water for 2 minutes, why will it be hot when you touch it? – Conduction  Heat is conducted to the spoon and the metal gets hot. What causes radiation? – Electromagnetic waves What type of energy is heat? – Thermal energy What is the difference between kinetic and potential energy? – Kinetic = movement energy – Potential = stored (resting) energy

7. List the 5 different types of energy. – Chemical, mechanical, thermal, radiant, and electrical What is an example of chemical energy? What is an example of mechanical energy? What is an example of radiant energy? What is an example of thermal energy? What is an example of electrical energy?