Chemical reactions
What is carbon dioxide?
Carbon dioxide is a clear gas composed to one atom of carbon (C) and two atoms of oxygen (O).
What is Hydrogen?
Hydrogen is a clean alternative to methane, also known as natural gas.
What are solid, liquid, and gas?
Th three most common states of matter.
What is water
Water is a liquid that covers 70% of our earth and a liquid that we need to survive. Another name for water is H2O.
What is endothermic?
One that uses or absorbs heat energy.
What is helium?
helium is a noble gas used to fill objects like a balloon because it's lighter then air and is non-flammable
What is solid?
Solid is a definite shape that only changes when a force is applied.
What is a covalent bond?
a shared pair of electrons.
What is the law of conservation of mass?
Matter can not be created or destroyed in a chemical reaction.
What is Iron?
The element with the chemical symbol Fe.
What is plasma?
A state of matter and a component of blood.
what is an ionic bond?
A form of chemical connection in which one atom loses valence electrons and gains them from another.
What is combustion?
A chemical process in which a substance reacts rapidly with oxygen and gives off heat.
What is uranium?
Uranium is a heavy metal element and has a atomic number of 92.
What is evaporation?
it's when liquid changes into a gas.
what is the octet rule?
atoms are most stable when their valence shells are filled with eight electrons.
What is the activation energy?
The minimum energy required for a reaction to occur
The only metal that is liquid at room temperature.
What is the melting point?
A substance that transforms from a solid to liquid
What is metallic bonding?
the way that metal atoms are kept together within a metal material.