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20 questions
The melting point of a substance is the temperature at which the substance changes from a solid to
Gas
Liquid
Solid
Plasma
What effect does observing the physical properties of a substance have on the substance?
Measuring physical properties changes the chemical identity of the substance
Observing physical properties has no effect on the substance
It makes to substance develop a deep seeded distrust of humans
The substance will undergo an exothermic reaction
A wave with a large wavelength will have a ______ frequency and _____ energy
high, low
high, high
low, high
low, low
What wave has the slowest frequency?
green
red
yellow
blue
What wave has the most energy
green
red
yellow
blue
What are the three main groups of the periodic table?
groups
metal
nonmetals
metalloids
periods
What are the vertical columns on the periodic called?
groups
periods
nonmetals
metals
metalloids
What are the horizontal rows on the periodic table called?
periods
groups
metals
nonmetals
metalloids
How many protons and electrons does nickel have?
28
58.69
What is the atomic mass?
58.693
28
What family does Argon belong to?
Nobel Gases
Halogens
Alkali Earth Metals
Alkali Metals
Found in group two of the periodic table; highly reactive
period
Alkali Earth Metals (Group 2)
metalloids (semimetals)
alkali metals (group 1)
The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds
alkali metals (group 1)
Halogens (Group 17)
atomic number
valence electrons
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