Grade 6 TEKS 6.5A, 6.5C Vocabulary
Chemical change
A change in matter that produces one or more new substances
Combustion (burning)
A chemical reaction between a fuel and oxidant, producing heat.
Mixture
A combination of two or more substances that are not chemically combined
Element
A pure substance made of only one kind of atom
Pure Substance
A sample of matter, either a single element or a single compound, that has definite chemical and physical properties
Solid
A state of matter that has a definite shape and a definite volume
Liquid
A state of matter that has a definite volume but no definite shape.
Gas
A state of matter with no definite shape or volume
Compound
A substance made up of atoms of two or more different elements joined by chemical bonds
Matter
Anything that has mass and takes up space
Unexpected temperature change
During chemical bonding, energy is released or absorbed making their surroundings hotter or cooler.
Bubbles
Gas is given off during a chemical reaction; may or may not have an odor. Sign of a chemical reaction.
Unexpected color change
New molecules created in a chemical reaction radiate light differently producing new colors.
Precipitates
Solid or liquid that form out of solution due to a chemical reaction
Chemical reaction
the process by which one or more substances change to produce one or more different substances
