Chemistry States of matter/ECM

Front

Which phase of matter is the least compressible? Options: gases, liquids, solids, plasma

Back

solids

Front

Which statement best describes why gas is easily compressible? Options: molecules of a gas are much smaller than those of solid, molecules of solid are not attracted to one another, molecules of gas are much further apart than those of solid, molecules of solid are much larger than those of gas

Back

molecules of gas are much further apart than those of solid

Front

When a substance changes from solid to a liquid (ice to water), its density normally decreases. What is happening to the substance's mass and volume to cause this decrease in density?

Back

volume will increase and mass will stay the same

Front

One similarity between mixtures and compounds is that they are both

Back

made up of two or more substances

Front

Definite volume, but no definite shape

Back

liquid

Front

Which state of matter has the greatest amount of kinetic energy (movement)? Options: solid, liquid, gas, varies depending on the substance

Back

gas

Front

Which substance can be broken down into simpler substances? **Elements cannot be broken down**: Ammonia, Boron, Lithium, Magnesium

Back

Ammonia

Front

A student correctly labeled milk as a mixture, which of the following is a justification for labeling milk as a mixture? milk is made of substances that are physically combined and can be found in many different properties, milk has a specific ratio of fat to water. The fixed proportion of fat to milk in water makes it a mixture, A mixture can be anything that is chemically combined and it will come out into a new substance, None of the above

Back

milk is made of substances that are physically combined and can be found in many different properties

Front

Which sample of water has definite shape? Water at -45 degrees C, Water at 45 degrees C, Water at 78 degrees C, Water at 178 degrees C

Back

Water at -45 degrees C

Front

Which best describes a substance composed of atoms that all have the same atomic number?

Back

element