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10/5/09 1. Which group contains the most elements? a.Metalloids b.Non-metals c.Metals d.Transition elements 2. All elements are composed of extremely small.

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Presentation on theme: "10/5/09 1. Which group contains the most elements? a.Metalloids b.Non-metals c.Metals d.Transition elements 2. All elements are composed of extremely small."— Presentation transcript:

1 10/5/09 1. Which group contains the most elements? a.Metalloids b.Non-metals c.Metals d.Transition elements 2. All elements are composed of extremely small particles called a.Compounds b.Mixtures c.Atoms d.Molecules

2 Anything that has mass and takes up space is considered a.Matter b.Energy c.Chemistry d.Endothermic A chemical equation that shows the same number of each kind of atom on both sides of the equation is said to be a.Balanced b.Unbalanced c.An incomplete reaction d.A replacement reaction

3 Which of the following is an example of chemical change? a.Water evaporating b.Carbon joining with oxygen to form carbon dioxide c.Ice cream melting d.A pencil breaking The melting and boiling point of silver are respectively 960.8˚C and 1950˚C. What is its freezing point? a.0˚C b.100˚C c.960.8˚C d.1950˚C

4 In order for a wave to form, what must energy cause a medium to do? a.Vibrate b.Compress c.Melt d.Diffract During a storm, a TV reporter says that the ocean waves are 3 meters high. This reported distance equals the distance a.From crest to the next crest b.From one trough to the next trough c.From a crest to a trough d.From a crest to the level of calm water

5 The number of complete waves that pass a point in a certain amount of time is a wave’s a.Amplitude b.Frequency c.Wavelength d.Speed The bending of a wave due to a change in its speed is a.Interference b.Reflection c.Diffraction d.refraction

6 Answer Key 1. C/C 2. A/A 3. B/C 4. A/D 5. B/D


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