unit 1 combustion, heat and energy
What are the two types of energy?
Kinetic energy and Potential energy
where is the atomic number found on the element?
On the top of the element
where is the p block found on the periodic table?
On the right side of the periodic table
what is a covalent bond?
a non metal and a non metal put together
what is the prefix for 3
tri-
What direction does heat flow in?
Hot to cold
what is the atomic number of Ca?
20
where are the non metals and metals found on the periodic table?
Metals on the left and Non metals on the right of the periodic table
what are ionic bounds?
oppositely charged ions attracted to each other (non metal and a metal)
what is the name of the ionic compound Zn(SO4)?
Zinc (II) Sulfate
Exothermic is the release of heat and endothermic is the gain of heat
In the bohr model what is the highest orbit level?
The first one
how many valence electrons does the family/group of Alkali earth metals have?
2 Valance e-
does a cation have a positive or negative charge?
positive
What does a subscript tell you?
How many atoms of each element are present in compound or molecule
What is combustion?
A chemical reaction that reacts with oxygen producing heat and light
what is the electron configuration of Br?
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5
what is electron affinity?
energy change that happens when an atom gains and electron
what is the octet rule?
when atoms form bonds until they have 8 valence electrons
what do Polyatomic ion's carry one more of?
atoms
what is heat transferrd by within the layers of the earth?
radiation, conduction and convection
what is the name of the ionic compound li3P
Lithium phosphate
What determines periodic trends?
The similarity in atomic structure of the element in their group
what are polar covalent bonds
they share valence e- unevenly
what is the chemical formula for magnesium and nitrogen?
Mg3 N2