Shared Flashcard Set

Details

Chapter 2 Exam Review
Review for Chapter 2 semester exam
21
Science
9th Grade
12/12/2013

Additional Science Flashcards

 


 

Cards

Term
element
Definition
a substance that cannot be separated or broken down into simpler substances
Term
compound
Definition
a substance made of atoms of two or more different elements that are chemically combined
Term
chemical formula
Definition
a combination of chemical symbols and numbers to represent a substance
Term
atom
Definition
the smallest unit of an element that maintains the properties of that element
Term
density
Definition
the ratio of the mass of a substance to its volume
Term
melting point
Definition
the temperature at which a solid becomes a liquid
Term
pure substance
Definition
a sample of matter, either a single element, or single compound that has chemical and physical properties
Term
chemistry
Definition
the scientific study of the composition, structure, and properties of matter and the changes that matter undergoes
Term
matter
Definition
anything that takes up space and has mass
Term
boiling point
Definition
the temperature at which a liquid becomes a gas
Term
mixture
Definition
a combination of two or more substances that are not chemically combined
Term
physical change
Definition
a change of matter from one form to another without a change in chemical properties
Term
chemical change
Definition
a change that occurs when a substance changes composition by forming one or more new substances
Term
matter
Definition
_____ has mass and occupies space.
Term
cannot
Definition
Elements ______ be broken down into simpler substances.
Term
elements, compounds
Definition
Pure substances include ____ and _____.
Term
16g / 4 mL = 4 g/mL
Definition
A piece of tin has a mass of 16 grams and a volume of 4 mL. What is the density?
Term
200 g / 50 mL = 4 g/mL
Definition
A man has a bottle completely filled with 200 g of slimey green liquid. What is the density of the liquid?
Term
True
Definition
Water turning into steam and gasoline turning into a gas are both physical changes.
Term
False
Definition
Dissolving is a chemical change.
Term
False
Definition
In a chemical change, the identity of the substances stays the same.
Supporting users have an ad free experience!