elements
what is the atomic number of hydrogen
1
What is the elemental symbol of carbon
C
Wgat happens when a metal reacts with oxygen
Rust is formed
Is boiling water a physical or chemical change
Physical
What is the Atomic number of oxygen
8
What is the elemental symbol of silicon
Si
What is a chemical reaction
A reaction that changes one substance to another
Endothermic vs exothermic
Edothermic absorbs heat exothermic emits heat
what is the atomic number of iron
26
What is the elemental symbol of Rhenium
Re
What are the 3 types of chemical reactions
Syntheisis replacement and decomposition
What is the difference between a chemical change and a physical change.
A chemical change changes a substances composition and is irreversible. A Physical change is a change in which the substance changes form but keeps its same chemical composition (reversible)
what is the Atomic number of platinum
78
What is the elemental symbol of uranium
U
What kind of chemical reaction is digestion
Decomposition
What is double replacement
When 2 parts of a chemical equation swap places
What is the atomic number of Nihonium
113
What is The elemental symbol of Nihonium
Nh
What is radioactivity
the release of energy from the decay of the nuclei of certain kinds of atoms and isotopes
What is a synthetic element
Manmade metals that do not naturally occur on earth