Combustion,heat & energy
What is mass?
The answer is quantity of matter.
What happens when the electrons release energy?
The answer is the atom can emit light.
What happened to the periodic table in 1871?
The asnwer is Mendeleev arranged elements by increasing atomic mass.
What is a covalent bond?
non metals with non metals.
What is CO2 chemical name?
The answer is carbon dioxide.
Is energy transferred from one or more systems?
The answer is energy is transferred & transformed from one system?
What is isotopes?
The answer is atoms that have the same number of protons but different numbers of nuetrons.
What is atomic radius?
The answer is one half the distance between the hudei of two atoms.
How is a single bond formed?
The answer is its formed between 2 non metals 2 shared e-.
What is the rule for ionic compounds?
The answer is it goes element name and then nonmetal ending in -ide
If you dont have potential energy can you still have kinetic energy?
The answer is no if you dont have one you cant have the other.
What happens when a gaseous element absorbs energy?
The answer is electrons become excited.
What are valence electrons and where are they found ?
The answer is electrons found in the other s'p orbitals, e- used to form chemical bonds.
Whats a double bond?
The answer is 4 shared e-.
What is calcium and bromine formula?
Ca+2 Br-1=CaBr2
What does an atom have within it?
The answer is electrons,protons & neutrons.
When energy level is furtherst from nucleus and closet to the nucleus what energy level is it?
The answer is closest to nucleus = low energy furthest from nucleus = highest energy level.
How does lonizatio energy increase?
The answer is it increase's from left to right along a period and bottom to top within a group.
What are the properties of ionic compounds?
The answer is cation+anion & metal+nonmetal
What is a poly otomic ion?
The answer is a group of atoms covalently bond together & overall group has a charge.
What is conductions state of matter and definition?
The answer is state of matter is soild and definition is the transfer of heat through or between physical objects in contact.
What are the 3 rules for filling orbital's?
The answer is
- 2e- in each orbital
- fill loweswt energy level
- fill 1 e- in orbital before adding a 2nd
What groups does Electron affinity increase from?
The answer is it increases from left to right groups 15-17.
What is the octet rule?
The answer is atosms will form bonds (lose organ e-) until it has 8 e- in the valence of each atom.
What is the Electron configuration for carbon?
The answer is 1s2 2s2 2p2