7th Grade Science Starter Monday, April 25 Atom is to molecule as ________________ is to cookie. Atom is to molecule as ________________ is to hand. Atom is to molecule as ________________ is to milkshake. Atom is to molecule as ________________ is to a word.
Tuesday, May 9 What is the mass on the triple beam balance below? Give your answer to the accuracy of the instrument and with the correct units.
Atom: Smallest piece of matter. Any square on the periodic table. (H, O, N, CL, Au) Nucleus: Protons= Positive charge Neutrons=No charge Electrons=Negative charge
Molecule: Two or more atoms put together Water= H2O Hydrogen=2 Oxygen=1
I say You say Mass Matter measured by a balance
Volume Space measured by a graduated cylinder I say You say Volume Space measured by a graduated cylinder or measured by a ruler or measured by water displacement
I say You say weight Gravity measured by a spring scale
I say You say Density Love measured by: Mass Volume Mass ÷ Volume
Matter Anything that has mass and takes up space.
Mass The measure of how much matter, or atoms are in an object.
Model Something you create that is either larger or smaller than real life
Volume the amount of space or room that is in an object volume = length x width x height
Meniscus Curve in the upper surface of a liquid
How much stuff you can fit in a space Density How compacted something is Density=mass volume (Mass ÷ Volume) How much stuff you can fit in a space
diffusion-Pee-usion! atoms or molecules moving from an area of high concentration to an area of lower concentration (From a lot to a little)
Osmosis Diffusion of water molecules from high concentration to low concentration. A lot to a little. Water follows salt and sugar.
Temperature the measure of how hot or cold something is Celcius
Particle A tiny piece of something
Solid fixed shape fixed volume particles vibrate slowly low energy
Liquid Phase of matter where particles can move freely, but remain connected to each other.
Gas phase of matter where particles move freely and have lots of energy
Graduated Cylinder used to measure volume of liquids
Heat Energy makes particles move faster and spread apart
Expansion when volume increases or gets larger
Contraction when volume decreases or gets smaller