CHEM 1110 WSU: Chapter 1 Tutor
Molecule
A ________ represents the limit to the physical subdivision of pure substances.
Solution
A homogeneous mixture of two or more pure substances is called a ________.
Heterogenous
A sample of matter composed of yellow flecks and black granules would be described as ________.
Pure substance, physical, mixture
A sample of methanol (CH3OH) would be classified as a ________ ________. Because salt water can be _____ separated by evaporating off the water and leaving the salt behind, it is classified as a _______.
Chemistry
A scientific discipline that studies matter is ________.
Mass
An actual measurement of the amount of matter contained in an object is known as the ___.
Space
Anything that has mass and occupies ________ is said to be matter.
Matter
Chemistry is the scientific study of ___.
Chemical
Classify the following change as physical or chemical: Electricity is produced from a battery.
Physical
Classify the following change as physical or chemical: A snow bank disappears on a sunny day without leaving a puddle of water.
Physical
Classify the following change as physical or chemical: A steel bridge expands on a hot day.
Physical
Classify the following change as physical or chemical: Gas is released when you open a soda can.
Chemical
Classify the following change as physical or chemical: Un-refrigerated meat spoils
Chemical
Classify the following change as physical or chemical: Vinegar is used to clean lime deposits in showers.
Chemical
Classify the following change as physical or chemical: Wood burning in a campfire
Physical
Classify the following change as physical or chemical: Yellow sulfur is melted and changes to a liquid.
Chemical
Classify the following change as physical or chemical: Your car rusts.
Chemical
Classify the following change as physical or chemical: Your stomach is no longer upset after taking an antacid.
Physical
Classify the following change as physical or chemical:A copper wire is bent.
Physical
Classify the following change as physical or chemical:Water freezes
Compound
Classify the following substance as an element or a compound.: CaO
Element
Classify the following substance as an element or a compound.: Cl₂
Compound
Classify the following substance as an element or a compound.: FeSO₄
Element
Classify the following substance as an element or a compound.: P₅
154.
Convert the following into the desired units: 1.54 m = ________ cm
5600.
Convert the following into the desired units: 5.6 g = ________ mg
0.000647
Convert the following into the desired units: 647 mm = ________ km
8.695
Convert the following into the desired units: 8,695 g = ________ kg
Homogenous, Pure substance
Copper is a (homogeneous/heterogeneous) (pure substance/mixture).
Pure substance
Elements and compounds are the two classification of ________ ________.
More, the same
Jupiter has a stronger gravitational force than Earth. On Jupiter, an object would have (more, less, the same) weight as on Earth, and the mass would be (more, less, the same) as on on Earth.
Matter
Mass is a measurement of the amount of ________ within an object.
Physical
Properties of matter that can be observed or measured without changing the composition of the matter are said to be ________ properties.
Homogeneous
Salt water would be classified as ______.
Models
Scientists often use scientific ________ to explain behavior that is observed in nature.
Homogenous, Mixture
Solid brass contains copper and zinc. Brass is a (homogeneous/heterogeneous) (pure substance/mixture).
Space
The amount of ________ an object occupies is known as its volume.
Sublimation
The changing of a solid directly into a gas without passing through the liquid phase is called ________.
Physical
The two types of changes matter can experience are: chemical and ________.
Heteroatomic
The type of molecules that consist of two or more types of atoms are called ________ molecules.
Chemical
What is the type of change that matter experiences that alters the composition of the substance? (physical/chemical)
10
Within the metric system, units of measurement are related by factors of ________ in common.
Matter
___ is defined as anything that has mass and occupies space.
Chemical
________ properties can be noted when one tries to change matter into another substance.
Triatomic
a) If a molecule contains three atoms, it is known as a ________ molecule.
Atoms
a) ________ are the very small particles that make up molecules.
Weight
a) ________ is a measure of gravitational force acting on an object.
Chemical
b) Atoms are the limit of the ________ subdivision of matter.
