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TExES Competency 031
Physical Science
Term | Definition |
---|---|
What is anything that makes up space & has mass | Matter |
The ______ of a body is the amount of matter in an object or thing. It is also the property of a body that causes it to have weight. | Mass |
_________ describes the amount of space that matter takes up | Volume |
_________is the amount of gravitational force exerted over an object. Also changes as an object go from one level of gravitational force to another. | Weight |
There are ________basic kinds of matter, called elements organized into the periodic table. | 112 |
Atoms are made up of particles called | Electrons, Neutron, and Protons |
_____ are two or more atoms bonded together in a chemical bond. | Molecules |
____ are when you have two or more different kinds of atoms in the molecule and have a given amount of that substance. They consist of matter composed of atoms that are chemically combined with one another in molecules in definite weight proportions. | Compound |
_____ represents how much matter is reflected or perceived by the human eye. | Color |
_____is the mass that is contained in a unit of volume of a given substance. | Density |
______represents the resistance to penetration offered by a given substance. | Hardness |
_____is the ability of substances to transmit thermal or electric current. | Conductivity |
_____ & ____ produce changes in the physical properties of matter. | Heat & Cold |
________ can be classified as a conductor or nonconductor of electricity. | Matter |
Matter can exist in four distinct states | Solid, liquid, gas, & plasma |
___ have mass , occupy a define amount of space or volume or have a definite shape, and are more dense than liquids. | Solids |
___have mass, occupy a definite volume, do not have a definite shape, but instead take the shape of their container, & are the least dense of the 3 states of matter. | Liquids |
_____has no definite shape or volume, & is a substance that cannot be classified as solid, liquid, or gas. | Plasma |
___ are combinations of 2 or more substances, where each substance is distinct from the other that is made up of 2 or more types of molecules and not chemically combined. | Mixtures |
____ are mixtures that are homogeneous, which means that the components are distributed evenly and there is an even concentration throughout. | Solutions |
A_______ is a change in a substance that does not change what that substance is made of | Physical change |
Melting ice (boiling water), tearing paper, chopping wood, writing with chalk, and mixing sugar and water together are all examples of | Physical Change |
A____ is when the substances that were combined are no longer the same molecules- they have changed to new substances. | Chemical change |
Burning wood, mixing baking soda and vinegar, or a rusting nail | Chemical change |
When heat is given off in a chemical it is an _____ reaction; and when heat is absorbed in a chemical change the combination becomes colder it is an _______ reaction | Exothermic, Endothermic |
The burning of gasoline in automobiles is a ___________ | Chemical Change |