Review Of Chemical Foundations Flashcards
Matter is anything that has _ and _
Mass and volume
What are the two main ways of classifying matter?
Physical state and chemical constitution
Name the three different physical states.
Gas, liquid, solid.
Name the three different types of chemical constitutions.
Element, compound and mixture.
What is the difference between homogeneous and heterogeneous mixtures?
Homogeneous mixtures have a uniform composition and heterogeneous mixtures have a non-uniform composition.
Explain the differences between the three physical states of matter.
Solids are rigid and posses a definite shape.
Liquids flow and take the shape of its container.
Gases take both the shape and volume of its container.
What is the difference between mass and weight?
Mass is a measure of the amount of matter in an object, whereas weight is the force that gravity exerts on the object.
State the law of conservation of matter.
There is no detectable change in the total quantity of matter present when matter undergoes any physical or chemical changes.
Define what an atom is.
An atom is the smallest part of an element that has the properties of that element and can enter into a chemical combination.
Differentiate between a physical property and a chemical property.
A physical property is a characteristic of an element that is not associated with a change in chemical constitution, whereas a chemical property is the ability of a substance to undergo a reaction and convert from one type to another.
Differentiate between physical and chemical change.
Physical change does not change the chemical identities of substances involved, whereas chemical change always produces one or more types of matter that differ from the matter present before the change.
What is the difference between an extensive and intensive property?
An extensive property depends on the amount of matter present, an intensive property does not.
Define accuracy.
Accuracy is when a measurement yields a result that is very close to the true or correct value.
Define precision.
Precision is when measurements yield very similar results when they are repeated.
Name three examples of physical properties.
Colour, solubility, density, hardness, melting and boiling points, electrical conductivity.
