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Which elements comprise the largest portion of the atmosphere?
Hydrogen, carbon, oxygen, and nitrogen
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
calcium
Ag, Db, and Xe
A pure substance, represented by a symbol, and make up matter on Earth
Cr and Cs
Copper-Cu
Which of the following correctly represents an element?
Hydrogen, carbon, oxygen, and nitrogen
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
calcium
Ag, Db, and Xe
A pure substance, represented by a symbol, and make up matter on Earth
Cr and Cs
Copper-Cu
Which group of elements comprises the largest portion of oceans?
Hydrogen, carbon, oxygen, and nitrogen
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
calcium
Ag, Db, and Xe
A pure substance, represented by a symbol, and make up matter on Earth
Cr and Cs
Copper-Cu
Which of the following represents an element?
Hydrogen, carbon, oxygen, and nitrogen
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
calcium
Ag, Db, and Xe
A pure substance, represented by a symbol, and make up matter on Earth
Cr and Cs
Copper-Cu
The chemical symbol Ca represents....
Hydrogen, carbon, oxygen, and nitrogen
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
calcium
Ag, Db, and Xe
A pure substance, represented by a symbol, and make up matter on Earth
Cr and Cs
Copper-Cu
Which of the following are characteristics of an element?
Hydrogen, carbon, oxygen, and nitrogen
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
calcium
Ag, Db, and Xe
A pure substance, represented by a symbol, and make up matter on Earth
Cr and Cs
Copper-Cu
Organisms are made of elements that form living matter. Which elements comprise the largest portion of living matter?
Hydrogen, carbon, oxygen, and nitrogen
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
calcium
Ag, Db, and Xe
A pure substance, represented by a symbol, and make up matter on Earth
Cr and Cs
Copper-Cu
Which of the following represents an element?
Hydrogen, carbon, oxygen, and nitrogen
Group A-Oxygen, Hydrogen, Sodium, and Chlorine
Nitrogen and oxygen in the forms of nitrogen (N2) and oxygen (O2)
calcium
Ag, Db, and Xe
A pure substance, represented by a symbol, and make up matter on Earth
Cr and Cs
Copper-Cu
Check it!