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Unit 1-Matter
to use a tool to learn more about the volume, length or weight of an object | measure |
to prevent electricity or heat from passing through | insulate |
a state of matter with a defined volume but no defined shape | liquid |
an object's mass divided by its volume; a measure of how many particles are packed together into a certain amount of space | density |
the amount of matter in an object | mass |
the chart scientists use to organize and classify all the known elements | periodic table |
a material with a particular chemical makeup | pure substance |
an object with a north and south pole that produces a magnetic field | magnet |
describes a substance that will break down another object upon contact | corrosive |
a state of matter without any defined volume or shape | gas |
a particular form that matter can take | state of matter |
an element or compound | chemical |
the physical matter of which living or nonliving things are composed | substance |
a natural, solid substance found in rocks; each mineral has a specific chemical makeup | mineral |
having to do with the eye or lenses | optical |
describes materials through which light can travel; materials that can be seen through | transparent |
having to do with electricity; a form of energy commonly used for lights, electric motors, and heating. | electric |
a material that transmits energy | conductor |
describes materials that allow some light to travel through them, but not enough to see through the material | translucent |
matter with a fixed volume and shape | solid |
the force of gravity on an object | weight |
material that has mass and takes up some amount of space | matter |
to group things based on similar characteristics | classify |
a shiny, dense substance that easily conducts heat and electricity | metal |
a property of an object that depends upon the wavelengths of light reflected by the object | color |
a measure of how hot or cold a substance is | temperature |
a subatomic particle with a negative charge | electron |
a subatomic particle with no electric charge, located within the nucleus of the atom | neutron |
a subatomic particle with a positive charge that is located in the nucleus of an atom | proton |
a pure substance that cannot be broken down into simpler substances by chemical reactions | element |
the chemical element consisting of one proton and one electron | hydrogen |
to bring together; to mix | combine |
two or more atoms joined together | molecule |
the number of protons in the nucleus of an atom; atomic number determines the chemical properties of the atom | atomic number |
the center of an atom containing protons and neutrons | nucleus |
the smallest unit of an element that has the properties of that element | atom |
an element that is a greenish gas at room temperature | chlorine |
density, volume, temperature, mass, weight, color, texture and odor | physical properties of matter |
wax melts in a candle | energy (heat) added to matter |
rain on the sidewalk becomes ice | energy (heat) removed from matter |
water turns to steam on the stove | energy (heat) added to matter |
3 states of matter | solid, liquid and gas |
Which state of matter has a lower density? | gas |
How can water change from one state to another? | ice is heated to make water and water is heated to make steam |
What will change the property of a material, such as water? | changing the state of the material |
An ice cube melts to become water in a cup. How are the ice cube and water alike? | They have the same mass. |
When would the property of a substance change? | when you change the state |
Are a rock, a glass of water and air made of atoms? | yes |
Atoms are sometimes called | building blocks of matter |
3 parts of an atom are: | proton, neutron and electron |
Atoms are mostly empty | space |
How many different kinds of atoms are there? | Over 100 |
What makes up the nucleus of an atom | proton and neutrons |
What orbits outside the nucleus? | electrons |
Protons have what type of charge? | positive |
Neutrons have what type of charge? | none, they are neutral |
Electrons have what type of charge? | negative |