Chapter 3 Reading (Hard) Flashcards
Physical properties are those characteristics that can be…
observed or measured without affecting or altering the identity of a substance.
A chemical change occurs when an original substance is
converted to a new substance, which has different physical and chemical properties.
The specific heat for a substance is
the amount of heat needed to change the temperature of 1 gram of a substance by 1 degree Celsius.
A compound is
a pure substance that consists of two or more elements chemically combined in the same proportion and held together by bonds.
A pure substance is
matter that has a fixed or constant composition.
Atoms are
the extremely tiny particles that make up each element.
Kinetic energy is
the energy of motion.
Absolute zero is
the coldest temperature possible on the Kelvin scale.
Matter is _______… It can further be defined as _______…
the substance of everything.anything that has a mass and occupies space.
1000 calories(cal) is the same as how many nutritional Calories(Cal)?
1 nutritional Calorie (1 Cal)
