Physical Science
Physical Science 2
Physical Science 3
Physical Science 4
Physical Science 5
100

a substance that produces hydronium ions (H3O+) when dissolved in water-PH<7

What is acid?

100

H2O

water

100

a change in matter in which the substance that makes up the matter change into other substances.

chemical change

100

The number of protons in an atom of an element.

atomic number

100

a substance containing atoms of two or more different elements chemically bonded together.

compound

200

The temperature at which an element or compound changes from solid to liquid.

Melting Point

200

neither acid or base - pure water-PH=7

neutral

200

the ability of a substance to be hammered or rolled into sheets.

malleability

200

a row of the periodic table

period

200

the amount of substance in a certain volume.

concentration

300

mass per unit volume of an object as compared to pure water.

density

300

NaCI

table salt

300

two or more atoms  that are held together by covalent bonds and act as a unit.

molecule

300

a positively charged particle in the nucleus of an atom.

proton

300

a negatively charged particle that occupies the space in an atom outside the nucleus

electron

400

atoms of the same element that have different numbers of neutrons

isotope

400

new substances formed in a chemical reaction

products

400

a mixture in which two or more substances are unequally mixed.

heterogeneous mix

400

CO2

carbon dioxide

400

the average mass of protons and neutrons in an atom.  It is the same as the average number of protons and neutrons in an atom.

atomic mass

500

to form a solution by mixing evenly

dissolve

500

a neutral particle in the nucleus of an atom

neutron

500

the ability of a substance to be pulled into thin wires

ductility

500

a mixture in which two or more substances are evenly mixed but not bonded together.

homogeneous mix

500

a change in the size, shape, form, or state of matter that does not change the identity of the matter.

physical change

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