Pure substances and mixtures - Year 7

Flashcard
•
Chemistry, Science
•
7th Grade
•
Easy
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20 questions
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1.
FLASHCARD QUESTION
Front
___________ are the smallest unit of an element that maintains the properties of that element.
Back
Atoms
2.
FLASHCARD QUESTION
Front
An _______________ is made up of one or more of the same kind of atom chemically combined.
Back
element
3.
FLASHCARD QUESTION
Front
A _____________ contains a variety of elements and compounds that are not chemically combined with each other.
Back
mixture
4.
FLASHCARD QUESTION
Front
A __________________ is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.
Back
pure substance
5.
FLASHCARD QUESTION
Front
A ______________ mixture is one that does not have a uniform composition.
Back
heterogeneous
6.
FLASHCARD QUESTION
Front
A _________________ mixture is one where the substances are evenly spread throughout.
Back
homogeneous
7.
FLASHCARD QUESTION
Front
Which of these is an element? Salt (NaCl), Water (H20), Oxygen (O), Carbon Dioxide (CO2)
Back
Oxygen (O)
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