basic part of an element
1. atom
2. neutron
3. electron
What is an atom
100
You find me on the periodic table. I am the number of protons in an atom.
element name, element symbol, atomic number, atomic mass
What is the atomic number?
100
I am the dense, positively charged center of an atom?
neutron, nucleus, electron
What is a nucleus?
100
I am the stair-step line on the periodic table. What do I seperate? I am a blue line.
transition elements, metals and non-metals
What are metals and non-metals?
200
positively charged particle which is given off by a radioactive substance
alpha particle, radiation, gamma ray
What is an alpha particle
200
I am the average mass of isotopes of an element found in nature.
What is Atomic mass?
200
I was discovered by J.J. Thomson.
electron, neutron, proton
What is electron?
200
I am lithium, sodium, and potassium. I am this family in the periodic table.
alkali metals, alkaline earth metals, noble gases
What is the alkali metals?
300
I am negatively charged. I am a high-speed electron given off by a radioactive substance
beta particle, alpha particle, gamma ray
What is a beta particle
300
I am a row on the periodic table?
What is a period?
300
I am a particle that does not have a charge.
neutron, electron, proton
What is a neutron?
300
I am magnesium, calcium, and barium. I am this family in the periodic table.
alkali metals, alkaline earth metals, noble gases
What is alkaline earth metals?
400
I am the most penetrating of the three types of radiation given off by a radioactive element. I am an electromagnetic radiation with a shorter wavelength than X Rays.
gamma ray, alpha particle, beta particle
What is a gamma ray?
400
I am a column on the periodic table
What is a family?
400
I am the particle of an element that orbits around the nucleus?
proton, neutron, electron
What is an electron?
400
I am a noble gas that does not have eight outer energy level electrons?
neon, helium, radon
What is helium?
500
I am any form of energy given off by an object.
electron, radiation, radon
What is radiation?
500
I am an arrangement of elements arranged by increasing atomic number.
What is periodic table?
500
The properties of elements change when
I move down a family of the periodic table.
I move across a period of the periodic table.
What is moving across the period of the periodic table.