Matter & Changes
The smallest unit of the element that has the properties of that element
What is an atom?
The number of significant figures in 0.0037 mL
What is 2?
This represents the number of protons in the nucleus of an element
What is the atomic number?
This type of electromagnetic radiation has the lowest frequency
What is microwaves?
The location of the metalloids on the periodic table
What is between the metals and nonmetals?
A mixture that has the same proportion of components throughout
What is homogeneous?
Derived units are combinations of these
What are SI base units?
The mass number of element A has 19 protons and 20 neutrons
What is 39?
Total number of electrons to fill the 4th main energy level
What is 32?
These elements have full outer energy levels when in their ground state
What are the noble gases?
Elements are arranged in the periodic table according to this
What is chemical properties?
This type of measurement can be represented by a solid dissolving in water
What is qualitative measurement?
The atomic number of the isotope nickel-60 is 28. The number 32 represents this.
What is the number of neutrons?
This indicates the main energy level occupied
What is the principal quantum number?
The energy required to remove 1 electron from a neutral atom of an element
What is ionization energy?
These elements are good conductors of electricity
What are metals?
The equation used to find the mass of an object
What is density/volume?
A neutral atom of silicon-30 has 14 protons and has 14 of these
What are electrons?
This represents the number of waves that pass a point in 1 second
What is frequency?
Based on the list below, the element with the greatest atomic radius:
S, Al, Si, C
What is aluminum?
When 2 or more groups of elements form a chemical compound
What is chemically combined?
This is represented in Joules
What is energy or work?
The sum of the number of neutrons and protons in an atom
What is the average atomic mass of an element?
The ejection of electrons from the surface of a metal shines light
What is the photoelectric effect?
Mendeleev organized the elements based on these
What are chemical properties?