Silver is a white metal that is an excellent conductor. Silver tarnishes when exposed to air and light. The density of silver is 10.49 g/cm3. The melting point is 962oC and the boiling point is 2000oC. A chemical property of silver is
An aluminum bar was found to have a mass of 27g. Using water displacement, the volume was measured to be 10 ml. What is the density of the aluminum?
A solid rubber ball sinks when placed in water. What will happen if the ball is cut in half and one of the smaller pieces is placed underwater?
Kamir and Alexis are studying the properties of water. They conducted a variety of experiments to determine its physical and chemical properties. Of the tests the students conducted, which one illustrates a chemical property of water?
A glass thermometer has a colored liquid inside it. The level of colored liquid rises when the thermometer is placed in hot water. Why does the level of liquid rise?
What process takes solid CO2 from a solid to a gas?
The average distance between molecules always increases during which of the following phase changes?
The periodic table is organized by
The three basic components of an atom are
An element is determined by the number of:
The nucleus of an atom consists of:
A single proton has what electrical charge?
Which particles have approximately the same size and mass as each other?
The atomic number of an atom is:
The mass of individual atoms mainly comes from
Which of the following best describes an atom?
Which of the following is found farthest from the center of an atom?
Which sub-atomic particle has a negative charge?
Which of the following are transferred or shared when two atoms react chemically?
In the periodic table, the rows are called:
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