What is mass? An crystalline solid has a distinct melting point A pot of water boiling at 100oC is an example of… Kinetic energy Potential energy Chemical energy Nuclear energy None of the above Match the following. volume Energy that is stored; in position density Amount of matter in object mass Amount of space matter occupies kinetic How tightly packed matter is potential Energy of motion What is gained when a liquid turns to a gas? A solid turning into a liquid is a chemical change. Which can be used to describe an atom? It takes up space It has mass The basic particle from which all matter is made It is in constant motion All of the above An exothermic reaction releases energy Describe the properties of a solid What is the difference between chemical change and physical change? Chemical: new substance(s) created; breaks down material—fizzing, bubbling, explosion, color change… Physical: the substance remains the same, just changes appearance—size, shape, form… What does the law of conservation of mass state? Density does not change, regardless of how much of a material you have. A liquid’s resistance to flow is viscosity. This is made of two or more substances in the same place, but not chemically combined. Compound Molecule Mixture Element Matter A change in size, shape, or phase of matter is an example of chemical change or physical change. All matter is made of different arrangements of approximately 100 different atoms What is surface tension? A gas is also a fluid. Compare the particle arrangements in a solid, liquid, and a gas Solid: tightly packed, fixed Liquid: free to move, but confined to a certain volume Gas: spread apart, fill all available space This is described as the force of outward push divided by the area of the walls of the container. Viscosity Pressure Surface tension Temperature Motion Match the following: Element How tightly packed matter is in an object Substance Anything that has mass and volume Matter Substance that cannot be broken down Molecule Single kind of matter that is pure Density Group of 2 or more atoms held together by chemical bond Honey is an example of a heterogeneous mixture. Which of the following statements about mass is correct Mass changes with gravity Mass changes with location Mass remains constant Mass changes with altitude Mass changes in a phase change If a material has a density greater than 1.00g/ml, it will sink. What is chemistry? Shaving my head is an example of what type of change? Way to go! A little more studying and you are all set!