Matter is anything that has mass and takes up space.
What is matter?
100
Volume is the amount of space that matter occupies.
What is volume?
100
Density= 2 g/cm3
What is the density when the mass is 4 g and the volume is 2 cm3?
100
True
Is the following sentence true or false? Every chemical or physical change in matter includes a change in energy.
100
Electromagnetic energy travels through space waves.
What is the best description of electromagnetic energy?
200
physical property is a characteristic of a pure substance that can be observed without changing it into another substance.
What is physical property?
200
Density relates the mass of a material in a given volume.
What is Density?
200
Density= 3 g/cm3.
What is the density if the mass is 18 g and the volume is 6 cm3?
200
(answers may vary) A melting ice cube.
What is an example of an endothermic change?
200
(answers may vary) A microwave oven can change a frozen block of spaghetti and sauce into a hot meal.
Give an example of how electromagnetic energy can cause changes in matter.
300
An atom is the basic particle from which all elements are made.
What is an atom?
300
Energy is the ability to do work or cause change.
What is energy?
300
Density= 12 g/cm3.
What is the density if the mass is 144 g and the volume is 12 cm3?
300
(answers may vary) A burning candle.
What is an example of an exothermic change?
300
A stretched rubber band or a bike at the top of a hill.
What is an example of potential energy?
400
a molecule is a group of two or more atoms held together by chemical bonds.
What is a Molecule?
400
Temperature is a measure of the average energy of random motion of particles.
What is temperature?
400
Density= 6 g/cm3.
What is the density if the mass is 64 g and the volume is 9 cm3?
400
(answers may vary) oxidation or electrolysis.
What is an example of chemical change?
400
Three ways are: a compound can be difficult to separate while a mixture is not, they have different boiling points, and the parts of a mixture are not combined in a set ratio.
What are three ways that compounds and mixtures differ?
500
Mass is the measurement of the amount of matter in an object.
What is Mass?
500
Electrodes are two medal strips in electrolysis.
What is an electrode?
500
Density= 7 g/cm3
What is the density if the mass is 42 g and the volume is 6 cm3?
500
A chemical change produces new substances while a physical change just alters the form.
How does a chemical change differ from a physical change?
500
Mass and volume.
What two quantities do you need to measure in order to determine the density of an object?