Random
Chemical reactions include what?
Color, density, hardness, melting, and boiling points are all properties of what?
Physical properties
What involves solvent separation on a solid medium?
Chromatography
The amount of matter measured is called what?
Mass
A combination of two or more substances in any proportions is what?
A mixture
What describes a chemical reaction?
Mass and Volume are examples of what?
Extensive properties
What takes advantage of differences in boiling points?
Distillation
The amount of space an object or substances takes up is called what?
Volume
What type of mixture has the same composition throughout?
Homogeneous
The simplest form of matter that has a unique set of properties is what?
Element
Color, temperature, and solubility are examples of what?
Intensive properties
What separates solids of different sizes?
Filtration
True or False: A substance cannot be separated into components using physical means.
True
A separate layer in a heterogenous mixture is called what?
Phase
A substance that contains two or more elements chemically combined in a fixed proportion is what?
Compound
What describes the ability of a substance to undergo a specific chemical change?
What removes a liquid from a solution to leave a solid material?
Evaporation
Solids, liquids, and gas (depending on temperature), are all identities of what? *There are two answers*
Matter & Substances
The properties that can be used to separate the components of a mixture are called what?
Filtering, boiling, or other physical properties
What are the four visual clues that indicate a chemical reaction is likely to occur?
*Must have exact answer on test*
A change of color occurs during the reaction., A gas is produced during the reaction., A solid product called a precipitate is produced in the reaction., A transfer of energy occurs as a result of the reaction
A change in matter which some of the properties of the material change, but the identity of the matter does not change, is called what?
Physical change
What is a mixture that varies in composition?
Heterogeneous mixture
Which of the following are examples of physical change?
Melting ice, grinding wood into sawdust, baking bread, a rusty chain
Melting ice & grinding wood into sawdust
Mixtures can be classified on the basis of particle sizes into three different types, what are they?
Solutions, suspensions, colloids