Ch 1 - matter and change Flashcards
What is a particular type of matter that has uniform and definite composition?
substance
What is a means of testing a hypothesis?
experiment
What is a quality or condition of a substances’ composition?
physical property
What is matter with a definite shape and volume?
solid
What is an approach to a solution of scientific problem?
scientific method
What is matter that flows and has a definite volume but NOT a definite shape?
liquid
What is matter that takes the shape and volume of the container?
gas
What is another name for a homogeneous mixture?
solution
What is a mixture that looks the same through out?
homogeneous
What is a combination of 2 or more chemicals that can NOT be broken down by physical means?
Chemical properties
What is the study of substances and the changes they under go?
chemistry
What are the building blocks of matter?
elements
What is the chemistry that studies all substances WITHOUT carbon?
inorganic
What is anything that has mass and takes up space?
matter
What is the chemistry that studies the composition of substances?
analytical
What describes a substance that although in a gaseous state, is typically a liquid or solid at room temperature?
vapor
What process is where a liquid is boiled, turns into a vapor, then is condensed back into a liquid?
distillation
What is used to represent elements?
chemical symbols
What are the STARTING substances of a reaction?
reactant
What states that IN a chemical or physical reaction - matter can NOT be created or destroyed - but is conserved?
Law of Conservation of Mass
Give some examples of a physical change?
cutting and grinding
boiling or condensing
freezing and melting
When does a chemical change occur to a piece of wood?
when is decays
What is the chemical symbol for sulfur?
S
What happens when iron and oxygen combine to form iron oxide (rust)?
a chemical change occurs
What kind of matter is gas?
gas takes the shape and volume of a container
Which is a compound:
carbon, hydrogen or water?
water
Which of the following is an extensive property:
color, mass, softness, hardness?
mass
Be able to state if the following is a Heterogeneous mixture, homogeneous mixture, compound or element?
vegetable soup tap water apple juice granite salt hydrogen hydrogen peroxide
vegetable soup - - heterogeneous mixture tap water - - homogeneous mixture apple juice - - homogeneous mixture granite - - heterogeneous mixture salt - - compound hydrogen - - element hydrogen peroxide - - compound
Be able to state if a physical or chemical change has occurred:
digesting food
burning matches
rotting meat
dissolving salt
digesting food - - chemical change
burning matches - - chemical change
rotting meat - - chemical change
dissolving salt - - physical change
How can you separate iron filings and sand?
Use a magnet to pull out the iron filings
How can you separate alcohol and water?
use distillation and condensation
What are the 4 signs of a chemical reaction has occurred?
- A Gas forms
- Change of Color
- Change in Temperature
- Forms a percipitate
Know the MATTER CHART
See Mrs. Krumpelman
