States of Matter
A substance that has a definite shape and definite volume is most likely in this state.
What is a solid?
Oxygen is classified as this because it contains only one type of atom.
What is an element?
The ability of a substance to be hammered into a thin sheet is an example of this type of property.
What is a physical property?
The formation of bubbles during a reaction can be evidence of the formation of this.
What is a gas?
He proposed the first modern atomic theory.
Who is John Dalton?
Density describes the relationship between an object's mass and its ______.
What is volume?
A measurement that is very close to the accepted value is described as this.
What is accurate?
In this state, particles are close together but can flow past one another.
What is a liquid?
Carbon dioxide is classified as this because two or more elements are chemically bonded together.
What is a compound?
Flammability is classified as this type of property.
What is a chemical property?
A cloudy solid that forms when two solutions are mixed is called this.
What is a precipitate?
His gold foil experiment provided evidence that atoms contain a small, dense nucleus.
Who is Ernest Rutherford?
Which equation is used to calculate density?
What is D=m/v?
A set of measurements that are very close to one another demonstrates this.
What is precision?
This state of matter has particles that are far apart and is highly compressible.
What is a gas?
Salt water appears uniform throughout and can be classified as this type of mixture.
What is a homogeneous mixture?
Melting ice changes the state of water but does not create a new substance. This is a ______ change.
What is a physical change?
A sudden unexpected change from clear to blue during a reaction may indicate this.
What is a color change?
He discovered the electron.
Who is J.J. Thomson?
A sample has a mass of 40 g and a volume of 10 mL. What is its density?
What is 4 g/mL?
How many significant figures are in 0.00450 g?
What is 3?
A bowl containing cereal, fruit, and nuts would most likely be classified as this.
What is a heterogeneous mixture?
An iron nail developing rust is an example of this type of change.
What is a chemical change?
Heat or light being produced during a reaction can provide evidence that this may have occurred.
What is a chemical change/reaction?
These three particles make up the basic structure of an atom.
What are protons, neutrons, and electrons?
A metal has a density of 8 g/mL and a volume of 5 mL. What is its mass?
What is 40 g?
What is the correct unit for measuring the mass of a small sample of a chemical in a laboratory?
What is grams (g)?
Unlike a compound, this type of matter can generally be separated using physical methods.
What is a mixture?
A student cuts a piece of aluminum foil into several smaller pieces. What happened to the identity of the aluminum?
What is nothing—the substance remains aluminum?
A student mixes two substances and notices a new odor, bubbling, and a temperature increase. Why are these observations significant?
What is they are evidence that a chemical change may have occurred?
He proposed that electrons occupy specific energy levels around the nucleus.
Who is Niels Bohr?
Two blocks have the same volume. Block A has a mass of 20 g, while Block B has a mass of 50 g. Which block has the greater density?
What is Block B?
A student measures a pencil three times and records 12.31 cm, 12.30 cm, and 12.31 cm. The measurements are close together but the accepted value is 12.80 cm. Are the measurements precise, accurate, both, or neither?
What is precise but not accurate?