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Intro
Scientific Method
Scientific Notation Problems
Dimensional Analysis Problems
Properties and Change
100
Define Matter
All the “stuff” in the universe blocks and everything made from.
100
What is systematic approach used in scientific study, whether it is chemistry, physics, biology, or another science.
Scientific Method.
100
Write the following number in Scientific Notation 0.07882
7.882 × 10^-2
100
Convert 35 kg to g.
35,000g
100
The physical forms of matter, either solid, liquid, or gas, are called______.
the states of matter.
200
What type of light destroys living organisms?
Ultraviolet light.
200
What is a control in an experiment?
A control is a standard for comparison in the experiment.
200
Write the following number in scientific notation 118000
1.18 × 10^5
200
Convert 57 mL to L.
0.057L
200
What is the difference between chemical and physical properties?
The ability of a substance to combine with or change into one or more other substances is called a chemical property. A physical property is a characteristic that can be observed or measured without changing the sample’s composition.
300
What is matter that has a definite composition?
Substance
300
What is the difference between Qualitative and Quantitative Data?
Qualitative data is obtained through observations that describe color, smell, shape, or some other physical characteristic that is related to the five senses. Quantitative data is obtained from numerical observations that describe how much, how little, how big or how fast.
300
Write the following number in scientific notation 74171.7
7.41717 × 10^4
300
Convert 15.9 mm to km.
1.59 X 10^-5 km.
300
What is the difference between extensive and intensive properties?
Extensive properties are dependent on the amount of substance present, such as mass, length, or volume. Intensive properties are independent of the amount of substance present, such as density
400
Describe how Ozone is formed.
Ozone is formed when oxygen gas (O2) is exposed to ultraviolet radiation.
400
What is the difference between an Independent and Dependent Variable?
An independent variable is the variable you plan to change. The dependent variable is the variable that changes in value in response to a change in the independent variable.
400
Write the following number in standard format. 3.443 × 10^-7
0.0000003443
400
Convert 3.55 yd to cm.
32.4 cm
400
What is the difference between a heterogeneous and homogenous mixture?
A heterogeneous mixture is a mixture where the individual substances remain distinct. A homogenous mixture is a mixture where the composition is constant throughout.
500
What us the difference between weight and mass?
Mass is a measurement that reflects the amount of matter. Weight is a measure of mass and the force of gravity on an object. Weight can change from place to place, but mass is constant.
500
What is a relationship in nature that is supported by many experiments, and no exceptions to these relationships are found.
Scientific Law
500
Write the following number in standard format 8.66185 × 10^4
86618.5
500
The speed of light is 3.0 X 10^10 cm/s. Convert this speed to km/hr.
1.1 X 10^9 km/hr
500
The________ states that a compound is always composed of the same elements in the same proportion by mass, no matter how large or small the sample.
law of definite proportions