Practice test unit 2 (not Finished Yet Flashcards
A way to separate mixtures based on the boiling points of different substances is called
Distillation
_______ Describes matter that can be stretched into a thin wire
Ductility
________ Describes matter that can be pounded into a thin
Malleability
______ Describes matter that can transfer of heat from one substance to another
Thermal-conductivity
a(n) _________ Is a substance that is made from atoms of different elements
Compound
A(n) ________ Is the combination of two or more substances that are not chemically bound to one another
Mixture
Sublimation, Melting and vaporization are phase changes that are________
Endothermic
Freezing, condensation and deposition are phase changes that are _________
Exoththemic
A process in which a gas changes into a liquid is ___________
(Sublimation/Deposition/condensation/vaporization/melting/freezing) 
Condensation
The process in which a liquid changes into a solid is _________
(sublimation/Depositions/condensation/vaporization/melting/freezing)
Freezing
A process in which a solid changes into a liquid is ________
(Sublimation/Deposition/condensation/vaporization/melting/ freezing)
Melting
A process in which a solid changes directly into a gas is __________
(Sublimation/deposition/condensation/vaporization/melting/freezing)
Sublimation
A process in which a liquid changes into a gas is _________
Vaporization
A process in which a gas changes directly into a solid is ________
Deposition
 Which separation Method would you use to remove sugar from sweet tea (Filtration/chromatography/ distillation/ crystallization)
Distillation
Water exist on earth naturally as a solid or liquid, and a gas. is a state of water, a chemical or physical property
Physical
water exists on earth naturally as a solid, a liquid and a gas. Is the state of water a chemical or physical property?
Physical
If the temperature of a gas is increased by 2x What will happen to the volume?
It will increase by 2X
If the pressure of a gas is increased by 2x, what will happen to the volume 
It will decrease by 2x
How do you resists flowing more than water as honey has a higher _______ than water
Viscosity
A substances temperature ______ During a phase change 
Doesn’t change 
A ______ is a special mixture that contains large particles, but not large enough to settle at the bottom
Colloid
A mixture that is non-uniform in composition is called
Heterogeneous
A mixture that is uniform in composition is called ______
Homogeneous
______ Is a heterogeneous mixture where visible particle settle
Suspension
A(n) _____ Is two or more atoms that are chemically join together
Molecule
a(n) _______ Is the smallest unit of an element that retains the properties of that element
Atom
A(n) _____ Is a substance that is unable to break down or separate into smaller substances by chemical method
Element
What is buoyancy?
A property that refers to the resistance to flow by a fluid
What is pressure?
The force that is exerted per unit area
What is a graduated cylinder?
A tool used to accurately measure volume of a liquid
What is an electric mass balance?
A tool used to find the mass of a small amount of substance
What is a solid?
A state of matter, in which particles are packed tightly together, and have a definite shape and volume
What is a liquid?
A state in matter, in which particles are held loosely together, and it does not have a definite shape, but has a definite volume
What is a gas?
A state of matter in which particles are not held together, and it does not have a definite shape or volume
What is viscosity?
A property that refers to the resistance to flow by a fluid
What is extensive?
A physical property that depends on the amount of matter that is measured
What is intensive?
A physical property that does not depend upon the amount of matter that is presented in the sample 
What is Mass?
The amount of matter that an object is made of
What is weight?
Immeasurable value that is determined from the amount of gravitational force exerted on a given object
