Welcome to Chemistry CH. 17& 18
Terms
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- What is the amount of energy required to remove an eleectron from an atom?
- ionization energy
- What does it mean for an element to be able to be bent into a shape?
- malleable
- The protons and neutrons added together are equal to the?
- Atomic mass
- What do atoms give off when they absorb energy,their electrons jump to high energy levels, and then fall back to their regular energy level?
- Light
- What is a positively charged sub-atomic particle called?
- A proton
- What are positvely charged electron donors that tend to be metals called?
- cations
- What is the industry that benefited from the production of aluminum?
- Aviation (flight)
- Atoms with different amounts of neutrons are called?
- isotopes
- What property are most of the elements on the periodic table?
- Metals
- What is the outer most shell of an atom called?
- Valence
- If an element symbol has two letters, the second letter is always going to be..?
- lowercase
- What is one of the earliest alloys ever created?
- bronze
- Flourine-Iodine are members of this family..?
- Halogens
- The number of protons or electrons is called?
- the atomic number
- What is the family that is also known as the ore formers?
- Chalcogens
- Who is the scietist that thought that atoms look a lot like plum pudding?
- Thomson
- What is it called wehn an element is able to be pulled or stretched into wire?
- ductile
- What part of the atoms would you find the electrons?
- energy leve/shell
- What is the family called whose charge is +1?
- alkali
- What is it called when the atom has an ability to accept electrons?
- electronegativity
- Who was the greek philosophist that coined the term atomos meaning invisible?
- democritus
- Who invented the periodic table in 1869?
- Mendeleev
- What is the neutral charged sub-atomic particle called?
- neutrons
- What is a column on the periodic table called?
- family
- What is the rule whereby atoms require eight ecetrtons in the valence shell?
- the octet rule
- Groups 13-15 on the periodic table are called what?
- metalloids
- Who is the woman that discovered radium and polonium?
- curie
- Helium-Xenon are members of this family?
- Noble Gasses
- What is it called when atoms with a net charge are either called a cation or an anion?
- ion
- What type of atoms tend to be anions?
- nonmetals
- Waht is an alloy for carbon, iron, and chromium?
- steel
- metals are good conductors of both electricity and...?
- heat
- what is a negative charged sub-atomic particle called?
- electron
- What were the early chemists called that tried to make gold out of everything?
- alchemists
- who was the scientist that came up with the planetary model of the atom, whereby the electrons were believed to orbit in shells?
- BOhr
- Protons and Neutrons make up what part of the atom?
- The nucleus
- A combination of metals forming a lighter stronger metal is called?
- alloy
- The first shell of an atom can hold how many electrons?
- 2
- What is the atomic radius?
- the size of an atom
- What is electronegativity?
- the ability of an atom to attract or take electrons
- What is ionization potential?
- the amount of energy required to remove an electron
- What is an ion?
- atoms that give or take electrons
- What did Wihhelm Roentgen discover?
- x-rays
- What did Rutheford discover?
- he discovred alpha rays (lowest energy), beta rays (middle energy), and gamma rays (highest energy)
- What happens to energy as you move farther from the nucleus?
- energy increases