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Air contains about 78% nitrogen and 21% oxygen. What can you conclude from this fact?
Compound
air is a mixture of at least two gases
The particles in salt water are distributed evenly among each other.
All mixtures are made up of atoms.
maple syrup
They will no longer burn with they are part of a watermolecule
They mix together to form a homogeneoussolution
gold
A material being examined is the same throughout. The material contains carbon and oxygen, chemically combined. What type of material is it?
Compound
air is a mixture of at least two gases
The particles in salt water are distributed evenly among each other.
All mixtures are made up of atoms.
maple syrup
They will no longer burn with they are part of a watermolecule
They mix together to form a homogeneoussolution
gold
Which of these common substances is a homogeneous mixture?
Compound
air is a mixture of at least two gases
The particles in salt water are distributed evenly among each other.
All mixtures are made up of atoms.
maple syrup
They will no longer burn with they are part of a watermolecule
They mix together to form a homogeneoussolution
gold
A compound is a substance that can be broken down into simpler substances and is made from atoms of two or more elements. Which of the following is not a compound?
Compound
air is a mixture of at least two gases
The particles in salt water are distributed evenly among each other.
All mixtures are made up of atoms.
maple syrup
They will no longer burn with they are part of a watermolecule
They mix together to form a homogeneoussolution
gold
Susie wants to make lemonade on a hot summer day. She mixes lemon juice, water, and sugar in a large container. Which of the following happens as she combines the ingredients?
Compound
air is a mixture of at least two gases
The particles in salt water are distributed evenly among each other.
All mixtures are made up of atoms.
maple syrup
They will no longer burn with they are part of a watermolecule
They mix together to form a homogeneoussolution
gold
Water has the chemical formula H2O. How do the properties of hydrogen (H) and oxygen (O) change when they come together to form water?
Compound
air is a mixture of at least two gases
The particles in salt water are distributed evenly among each other.
All mixtures are made up of atoms.
maple syrup
They will no longer burn with they are part of a watermolecule
They mix together to form a homogeneoussolution
gold
What is true of all mixtures?
Compound
air is a mixture of at least two gases
The particles in salt water are distributed evenly among each other.
All mixtures are made up of atoms.
maple syrup
They will no longer burn with they are part of a watermolecule
They mix together to form a homogeneoussolution
gold
A solution is a mixture where one substance is dissolved in another. One example of a solution is salt water. Why does salt water appear to be a single substance even though it contains more than one substance?
Compound
air is a mixture of at least two gases
The particles in salt water are distributed evenly among each other.
All mixtures are made up of atoms.
maple syrup
They will no longer burn with they are part of a watermolecule
They mix together to form a homogeneoussolution
gold
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