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Ch 11 Sci Info

Matter and It's Properties

QuestionAnswer
How many elements are in carbon dioxide? two: one atom of carbon and two atoms of oxygen
What are the properties of metals? color, hardness, texture
Do properties of metals change if you bend, cut or crush it? no
How do phase changes occur? the phase of matter changes as the arrangement and movement of its atoms or molecules change
Describe the particles of a solid. particles of a solid are very close together
Does matter in a liquid state have a definite shape? no - the particles can move about
What caused dew to form? condensation (gas turns to liquid)
What type of compound is held together by opposite charges? salt
What types elements does salt have? at least one metal and one nonmetal
When are crystals formed? when charged particles arrange themselves in a regular geometric pattern
Are salt crystals brittle? yes
What temperature is needed to melt salts? very high
Why do materials get smaller when cooling? their particles move more slowly and there is less space between them
What are the parts of a solution? solute and solvent
What is a solvent? the substance in which the solute is being dissolved
What is a solute? the substance that is dissolved
Why can materials in simple mixtures be separated? they have different properties
What is mass? the amount of matter in an object
What is weight? the measure of the pull of gravity on an object
What is volume? the amount of space an object takes up
What is density? a measure of the amount of matter in a given volume
How do you find the density of an object? divide the object's mass by its volume (D=m/v)
What is buoyancy? an objects ability to float
Created by: critmccoy