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#20- Which of the following is NOT an example of a chemical change?
Because they use the Latin or old world name of the element.
Noble gases
pure substances
number of electron energy shells.
Metals show a wide range of chemical properties.
The number of protons in an element and the elements in groups have similar properties.
mixture
salt dissolving in water
#22- In general, which of the following statements about metals is true?
Because they use the Latin or old world name of the element.
Noble gases
pure substances
number of electron energy shells.
Metals show a wide range of chemical properties.
The number of protons in an element and the elements in groups have similar properties.
mixture
salt dissolving in water
The period number is also the same number as the
Because they use the Latin or old world name of the element.
Noble gases
pure substances
number of electron energy shells.
Metals show a wide range of chemical properties.
The number of protons in an element and the elements in groups have similar properties.
mixture
salt dissolving in water
#21- Lemonade consists of several substances that are NOT chemically combined, so lemonade is classified as a(n)
Because they use the Latin or old world name of the element.
Noble gases
pure substances
number of electron energy shells.
Metals show a wide range of chemical properties.
The number of protons in an element and the elements in groups have similar properties.
mixture
salt dissolving in water
Why do some of the symbols not match the name of elements on the Periodic Table of Elements?
Because they use the Latin or old world name of the element.
Noble gases
pure substances
number of electron energy shells.
Metals show a wide range of chemical properties.
The number of protons in an element and the elements in groups have similar properties.
mixture
salt dissolving in water
#19- Table sugar and table salt are examples of
Because they use the Latin or old world name of the element.
Noble gases
pure substances
number of electron energy shells.
Metals show a wide range of chemical properties.
The number of protons in an element and the elements in groups have similar properties.
mixture
salt dissolving in water
The periodic table is set up according to
Because they use the Latin or old world name of the element.
Noble gases
pure substances
number of electron energy shells.
Metals show a wide range of chemical properties.
The number of protons in an element and the elements in groups have similar properties.
mixture
salt dissolving in water
#24- The elements that do not ordinarily form compounds are
Because they use the Latin or old world name of the element.
Noble gases
pure substances
number of electron energy shells.
Metals show a wide range of chemical properties.
The number of protons in an element and the elements in groups have similar properties.
mixture
salt dissolving in water
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