Describing Matter
Anything that has mass and takes up space
Matter
The study of matter and how matter changes
Chemistry
Do you always have to label your units (g, mls, etc) in science class?
YES!!!!
The measure of the force of gravity on you
Gravity
What is the basic particle from which all elements are made
atom
A characteristic of a substance that can be observed without changing it into another substance
Physical Property
Characteristic of a substance that describes the ability to change into another substance.
Chemical property
What is the measure of how much space something takes up?
volume
What is a the measure of the amount of matter (atoms) in an object?
Mass
What is it called when 2 or more substances are together in the same place but their atoms are not chemically bonded
mixture
What is the name for a substance that cannot be broken down into any other substance by chemical or physical change
element
An element is made of only one type of atom. A compound is two or more different types of atoms chemically bonded together.
How would you find the density of an object?
Density = m/v
What is the term for the measure of the mass of a material in a given volume
density
How are mass and weight different?
Weight is affected by gravity. Mass it not.
What is the difference between evaporation and distillation for separating mixtures?
Evaporation involves boiling a liquid out of a liquid/solid mixture. Distillation involves boiling 2 liquids to remove the one with the lower boiling point.
Yes. If two or more atoms are bonded together it is a molecule. An element would have all atoms of the same kind.
If an object has a mass of 32g and a volume of 4ml, what is its density?
Give an example of something that becomes less dense when heated.
Answers will vary.
How would you explain density?
The amount of mass for a given volume.
How is a mixture different from a compound? Give an example of each.
Mixtures and not chemically combined and can be separated. Compounds are chemically combined. Water is a compound because the Hydrogen (H) and the Oxygen (2O) are chemically bonded and can not be separated physically. Salt water is a mixture because you can separate the water from the salt by evaporation.
Can a compound and element both be molecules?
Yes. Anytime 2 or more atoms are chemically bonded, it is a molecule.
If a rock has a volume of 3 and a density of 9, what is its mass. Explain.
Is warm air more of less dense than cold air? Why?
Warm are is less dense than cold air because the particles spread apart when they are heated. As temperature increases, density decreases.
What is the difference between and element and a compound.
A element is all atoms or the same kind bonded. A compound is atoms of different kinds bonded. Both are molecules.