Question | Answer |
A characteristic of matter that can be seen or measured WITHOUT CHEMICALLY CHANGING that matter is ______________ . | Physical property. |
A characteristic of matter than can only be observed when one substance changes into or produces something new is a _____________ . | Chemical property. |
A change in which the identity of matter transforms into another type or kind that may have very different properties from the original is known as a _______________ change. | Chemical |
A change in which the identity of the substance does not change is known as a ____________ change. | Physical |
The state of matter in which the molecular configuration is the most spread out because the atoms have the most energy and are moving fast is the _____________ state. | Gas |
The state of mater that is created when heat (more energy) is added to a solid is the _____________ state. | Liquid |
The state of matter with the least energy in which the atoms are tightly packed together and vibrate slowly in place is the ________________ state. | Solid |
A pure substance in its simplest form (a single atom) that cannot be broken down into any other substance by chemical or physical means is a(n) _______________. | Element |
A pure substance made of two or more elements chemically combined in a set ratio is a _________________. | Compound |
When one or more of the same element combine and the substance can exist alone and keep it's original properties is a _____________________. | Mixture |
What is the name for the particles INSIDE the nucleus of an atom? | Protons and Neutrons |
Electrons move around in the nucleus of an atom in what are known as shells or energy levels the charge of an electron is? | Neutral (no charge) |
The charge of a proton is? | Positively charged |
The elements arranged in vertical columns of the periodic chart have similar properties and are also known as_____________ and or _______________. | Groups and or families. |
The horizontal rows of the periodic table are known as? | Periods |
Anything that has mass and takes up space is called? | Matter |
List at least three examples of physical properties? | Boiling Point, Freezing Point, Color, Smell |
List at least three indicators or clues that a chemical change has occurred. | Change in smell/odor, Change in temperature, Change in color, Change in state (solid to a liquid OR a liquid to a solid), Formation of bubbles. |
List at least three specific examples of a chemical change. | Burning Wood, Digesting Food, Dissolving Salt in water. |