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Questions
Questions
Definitions
Definitions
nj ask practice
100
It is a physical change because it is still the same substance
What is ice melting a physical or chemical change
100
There is 8 hydrogen and 4 oxygen atoms
What is how many hydrogen atoms exist before the reaction
100
smallest particle of an element
What is atom
100
a substance that cannot be broken down by simple chemical and physical processes
What is element
100
The elements on the left side are better conductors of electricity than the right side
What is the correct way to compare the elements on the right side of the periodic table to the left side
200
H2O2
What is the chemical formula for hydrogen peroxide
200
There is 8 hydrogen and 4 oxygen atoms
What is How many atoms exist after the reaction
200
the number of protons in an atom's nucleus
What is atomic number
200
any element to the left pf the periodic table except for hydrogen
What is metal
200
It is a gas at room temperature and pressure
What is a property of fluorine
300
Chlorine,bromine.iodine,and astaline
What is the four elements that have chemical properties most similar to those of fluorine in column VII A
300
AG P Li Te I
What is Silver Phosphorous Lithium Tellurium and iodine
300
a reaction between substances that results in new substances with different chemical properties being formed
What is chemical change
300
an element with properties of a metal and a nonmetal
What is metalloid
300
neon
What is the lest likely to combine with another element
400
sodium and beryllium
What is two other metals that tarnish quickly in air
400
letters and numbers that tell the types and numbers of atoms in a single molecule
What is chemical formula
400
an element that lacks the characteristics of a metal
What is nonmetal
400
an iron bridge turning brownish-red over the years
What is an example of a chemical change
500
Potassium, fluorine, and radium,
What is Two other elements that would mix with sodium to make a salt.
500
the relative amount of a material in a given area
What is concentration
500
a mixture in which a solute is dissolved by a solvent
What is solution
500
filter paper, water, beakers
What is the equipment will best separate a mixture of sand and sugar