Elements
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Barbara White
FREE Resource
Student preview
14 questions
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1.
FLASHCARD QUESTION
Front
Matter Noun
[mat-er]
Back
Matter
Anything that has mass and occupies space, meaning it has volume, and is the substance of all physical objects.
Example: This diagram shows how the particles that make up matter are arranged in its three common states: tightly packed (solid), close but random (liquid), and far apart (gas).
2.
FLASHCARD QUESTION
Front
Atom Noun
[at-uhm]
Back
Atom
The fundamental building block of all matter, representing the smallest unit of an element that maintains its chemical identity.
Example: This diagram shows the parts of an atom: a central nucleus with protons and neutrons, and electrons orbiting the nucleus in shells.
3.
FLASHCARD QUESTION
Front
Pure Substance Noun
[pyoor sub-stuhns]
Back
Pure Substance
A type of matter with a fixed, definite composition and uniform properties throughout its entire structure.
Example: These gold bars represent a pure substance because they are made of only one type of element: gold atoms.
4.
FLASHCARD QUESTION
Front
Element Noun
[el-uh-muhnt]
Back
Element
A pure substance composed of only one type of atom that cannot be broken down into simpler substances by chemical means.
Example: This diagram shows the structure of a single sodium atom, a type of element, with its electrons arranged in shells around a central nucleus.
5.
FLASHCARD QUESTION
Front
Compound Noun
[kom-pound]
Back
Compound
A pure substance made of two or more different types of atoms that are chemically bonded together in a fixed ratio.
Example: This image shows a model of a carbon dioxide (CO₂) molecule, which is a compound formed when one carbon atom chemically bonds with two oxygen atoms.
6.
FLASHCARD QUESTION
Front
Molecule Noun
[mol-i-kyool]
Back
Molecule
A neutral particle formed when two or more atoms, either of the same or different elements, are chemically bonded together.
Example: This image shows a water molecule (H₂O), which is formed when two hydrogen (H) atoms and one oxygen (O) atom chemically bond together.
7.
FLASHCARD QUESTION
Front
Mixture Noun
[miks-cher]
Back
Mixture
A combination of two or more substances that are physically combined but are not chemically united or bonded together.
Example: This diagram shows salt and water, two separate substances, being physically combined and stirred to form a saltwater solution, which is a type of mixture.
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