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100
What is the branch of science which deals with the study of matter, its properties, composition and the changes it undergoes?
Chemistry
100
Law
What is a statement or mathematical expression that reliably describes a behavior of the natural world?
100
Physical Property
What is that property that can be determined without changing the nature of the substance ?
100
Pure substance
Is has a definite chemical and physical properties?
100
Precision
What refers to how close several measurements agree with one another?
200
What is the systematic way of solving problems ?
Scientific method
200
Matter
What is anything that has mass and volume?
200
Chemical Property
What is a property of matter that describes a substane's ability to participate in chemical reactions ?
200
Element
What is the substance that cannot be separated or broken down into simpler substances by chemical means?
200
Significant Figure
A prescribed decimal place that determines the amount of rounding off to be done based on the precision of the measurement
300
What is a reasonable and testable explanation for observations ?
Hypothesis
300
Volume
What is the space occupied by an object ?
300
Density
What is the ratio of the mass of a substance to the volume of the substance ?
300
Compound
What do you call the substance which is made up of atoms of two or more different elements joined by chemical means?
300
Scientific Notation
Making long and complicated numbers short and easy to understand.
400
What is a factor that could affect the results of an experiment ?
Variable
400
Mass
What is the quantity of matter contained in that object ?
400
Atom
What is the smallest unit f an element that maintains the properties of that element ?
400
Mixture
What do you call a combination of two or more substances that are not chemically combined ?
400
Atomic Number
equals to the number of protons or equals to the number of electrons
500
What is an explanation for some phenomenon that is based on observation,experimentation and reasoning?
Theory
500
Weight
What is defined as the forced produced by gravity acting on mass?
500
Molecule
What is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance ?
500
Accuracy
What refers to a description of how close a measurement is of the true value of the quantity measured?
500
Mass Number
Is equal to the number of protons and neutrons.