Elements, Mixtures and compounds
The smallest unit of matter which has properties of a chemical element.
What is an atom?
Matter can neither be _____________ nor ______________.
What is created, destroyed OR made, lost.
The subatomic particles (the parts of an atom.)
What are protons, neutrons, and electrons.
Two or more elements bonded together in specific ratios
What are compounds?
A mixture in which a material is dissolved. Homogenous mixture.
What is a solution?
These are the ingredients of a reaction; they are on the left side of the arrow.
What are reactants?
The inner part of an atom, composed of protons and neutrons.
What is the nucleus.
Elements that are shiny, conduct electricity and heat, are malleable and ductile.
What are metals?
A mixture that is not evenly mixed.
What is a heterogeneous mixture?
A process that involves the rearrangement of atoms to form new substances.
What is a chemical reaction?
The charge of an electron.
What is negative.
Elements that do not readily bond with other elements. Group 18 on the far right of the periodic table.
What are noble gases?
The smallest particle of a compound that retain the properties of the compound.
What are molecules?
The symbolic representation of a chemical reaction using symbols and chemical formulas.
What is a chemical equation?
The charge of a neutron.
What is no charge or neutral.
A bond which forms between metals and nonmetals
Ionic bond
How could you isolate salt from sea water?
What is heat it, boil it or let it evaporate. (Any one of these are correct!)
List at least 3 indicators of a chemical change.
What are color change, gas is produced (smell or bubbles or fizz), a solid is formed, bright light or temperature change, etc.
The outermost electrons in an atom- the ones that participate in chemical reactions
What are valence electrons?
The type of covalent bond formed between two Oxygen Atoms (O). hint: oxygen is in group 16
Double bond