Why Does it Matter?
This state of matter retains a fixed volume and shape
What is a solid?
The force exerted by gravity on an object
What is weight?
A substance that cannot be split up into two or more substances by physical or chemical methods.
What is an element?
What the exponent in a number written in scientific notation represents.
What is "how many times the base (10) is multiplied or divided"?
Isotopes of an element differ in the number of ____.
What are neutrons?
Corrosion and burning are examples of this type of change
How mass changes when an object is taken from earth to space.
What is "it stays the same"?
Phosphorus has this many valence electrons.
What is 5?
Melting ice into water, mixing sand and iron filings, and stretching a rubber band are examples of this type of change.
What is a reversible physical change?
The name of this chemical compound: H2O2
What is dihydrogen dioxide?
This is a substance made of two or more elements chemically bonded to each other in a fixed ratio
What is a compound?
Sugar dissolved in water is an example of this type of mixture.
What is a homogeneous mixture?
This is the SI (international system) unit for mass.
What is kilogram?
What is a chemical reaction?
The net charge of the ionic compound calcium fluoride.
What is 0?
This type of matter has no definite shape and has particles that are free to move over each other but are still attracted to each other.
What is a liquid?
This type of mixture has visually distinct parts or phases.
What is a heterogeneous mixture?
This term describes a combination of two or more elements.
What is a compound?
Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei.
What is an isotope?
The number of significant figures in this number: 30.4
What is 3?
Has no definite shape, no definite volume, and its particles move in random motion with little or no attraction to each other.
What is a gas?
A type of change that can be reversible or irreversible.
What is physical change?
This is used to express very large or very small numbers in a simpler and more manageable way.
What is scientific notation?
This represents the total number of protons and neutrons in the nucleus.
What is the atomic mass of an element?
What is +2?