29 Questions
What determines how a substance can be converted into another substance?
Chemical properties
What is a characteristic of a pure substance?
It has a constant composition regardless of sample size or origin
What is an example of a mixture?
Sugar dissolved in water
What is a characteristic of a mixture?
It can have varying composition
What is an element?
A pure substance that cannot be broken down by a chemical change
What is a compound?
A pure substance formed by chemically joining two or more elements
When rounding a number, what happens if the first digit to be dropped is between 0 and 4?
It is dropped and all remaining digits to its right are also dropped.
What is the purpose of the 'rounded to' column in Table 1.5?
To show the number of decimal places to round to.
When performing addition and subtraction, how do you determine the number of decimal places in the answer?
By using the number of decimal places in the original number with the fewest decimal places.
What is the range of the coefficient in scientific notation?
1 to 10
What happens if the first digit to be dropped is 5 or greater when rounding a number?
1 is added to the digit to its left.
What is the exponent in scientific notation?
Any positive or negative whole number.
What is the purpose of moving the decimal point when converting a standard number to scientific notation?
To give a number between 1 and 10
What happens when the exponent x is positive in a scientific notation number?
The decimal point is moved to the right
What is the purpose of writing conversion factors as fractions?
To make the units cancel
What is the goal when setting up a problem using conversion factors?
To make sure all unwanted units cancel
What happens when a unit appears in the numerator in one term and the denominator in another term?
The units cancel
What is the result of multiplying a number by a conversion factor?
The quantity in the desired unit is obtained
What are the two essential components of every measurement?
Unit and quantity
What is the base unit of length in the metric system?
Meter
What is the symbol for the unit of mass in the metric system?
g
What is the numerical value of the prefix 'Mega'?
10^6
How is the unit 'Liter' related to the base unit of volume?
It is the base unit of volume
What is the prefix 'micro-' sometimes abbreviated as?
μc
What is the base unit of length?
Meter
How many meters are in a kilometer?
1,000 meters
What is the base unit of mass?
Gram
How many grams are in a kilogram?
1,000 grams
What is the difference between mass and weight?
Mass is the amount of matter in an object, weight is the force that matter feels due to gravity
Get ready to explore the basics of matter, including its classification, states, and chemical properties. Learn how to distinguish between pure substances and mixtures, and more!
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