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5th grade science

ELEMENTS AND COMPOIUNDS

QuestionAnswer
Mass, volume, color are physical or chemical properties? Physical
True or False A physical change does NOT produce a new substance. true
bubbling gas, heat, color change, and new substance are all properties of a _____________ change. chemical
Matter can either be a pure substance or a ______________. mixture
What are the 2 kinds of mixtures? Homogeneous and heterogeneous
true or false heterogeneous mixtures are mixed evenly. False
A pure substance of 2 or more elements that have been chemically combined is called a ______________. compound
An _______________ is a pure substance that cannnot be separated by chemical or physical means. element
The smallest particle of a compound. Molecule
Smallest unit of an element, or matter. Atom
Ice cream melting is an example of what kind of change? physical
What kind of change is digesting food? chemical
Sodium reacting in water is an example of a ______________ change chemical
Iron reacts with water to form______________. rust
True or false, Oxygen is a gas. True
A patio cracking is an example of a ______________ change physical
Frying an egg is a _____________ change. chemical
What black element is made when burning sugar? Carbon
Table sugar is an example of a _____________. compound
Is salt an element or a compound? Compound
What 2 elements combine to make table salt? Sodium and chlorine.
Burning a marshmallow is an example of a ____________ change. chemical
All matter is made up of_____________. atoms
Compounds don't always look like their original _______________. elements
Each substance in a mixture keeps its own _____________. properties
true or false Salt crystals dissolved in water are a homogeneous mixture. true
Created by: 1304942637