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Science Vocab

Element The basic building blocks of matter Combine to make other types of matter Cannot be separated into parts by chemical means ex: gold, found in nature
Matter Anything that has mass and occupies space
Mass The amount of matter in an object Mass affects the weight of an object, but mass is not the same as weight ex: mass never changes, weight does
Graduated Cylinder Use to find the volume of a liquid Use to measure the volume of a solid object that fits in the cylinder and sinks in water
Density d=mass/volume g/cm3 (calculator) The mass of a substance divided by its volume Measure of the amount of matter in a given volume
Neutron No electrical charge - Neutral A particle with no electrical charge in the nucleus of an atom
Nucleus Protons + Charge (positive) Contains DNA which controls how the body grows and changes
Rows Elements are arranged in each row according to the number of protons Larger atoms are on the right side of each row
Symbol Every element has a symbol of one, two, or three letters Only the first letter of the symbol is capitalized
Compound A substance made up of a combination of two or more elements Held together by chemical bonds that cannot be separated by physical means
Physical Properties Can be observed, described, and measured with tools mass, volume, phase at room temp, hardness, crush ability, color, texture, odor, bendable, size, shape, able to be cut
Chemical Properties Describe how a material changes into another material ex: wood into ashes, burn wood
Balance Tool to measure the mass of an item Put the item on one side and add gram cubes to the other side until the 2 sides balance Find the total mass of the gram cubes Each gram cube has a mass of 1 gram
Displacement Occupation by a submerged body of a volume that would otherwise be occupied by a fluid
Buoyancy sink or float? water = density 1.0 < 1 will float > 1 will sink
Proton A positively charged particle in the nucleus of an atom
Periodic Table of Elements Table displays chemical elements Classifies and compares chemical behavior
Columns Columns of the table are arranged so that the elements in each column have similar chemical properties You can predict the properties of an element if you know its column
Element Number Atomic number
Chemical Formula Shows how many atoms of each element are in the compound
Metals Metals such as gold silver copper iron & nickel are elements Many metals are alloys or mixtures of elements ex: Steel is a mixture of iron and carbon, Brass is a mixture of copper and zinc, Bronze is a mixture of metals, mostly copper and tin.
Weight Measure of the pull of gravity on an object Measure objects weight in newtons
Volume l x w x h (metric ruler) cm3 displacement (grad cylinder) 1 ml = 1 cm3 amount of matter that it can hold amount of space an object takes up
Atom The smallest particle of an element Has all the properties of the element
Electron A negatively charged particle moving around the nucleus of an atom
Element One kind of atom, pure The basic building blocks of matter Cannot be separated into parts by chemical means
Molecule Made up of two or more different kinds of elements (atoms) ex: Water - H2O (2) Hydrogen + (1) Oxygen ex: Carbon Dioxide - CO2 (1) Carbon + (2) Oxygen
Solubility Dissoluability solute + solvent
Created by: snowgirl23