Atoms + Molecules
What is the smallest part of an element that still has its properties?
atom
a compound is made of ______________ elements
two or more
silky, bumpy, smooth, sticky, and rough are examples of...
TEXTURE
true or false: mass and weight are always the same as each other
FALSE! weight changes based on location
what tool can you use to measure temperature
a thermometer
a group of two or more elements bonded together is a _____________________
molecule
fill in the blank: an element is a _______________, which means it is only made of one type of atom
PURE SUBSTANCE
one of the easiest and quickest physical properties to observe is _________________
color (other things could be said too)
what units can you use to measure mass?
grams, kilograms, etc.
what tool can you use to observe color?
your eyes/sight
how do we draw molecules? Draw the molecule for H2O.
Ex: H ------ O -------- H
metals conduct _________ and _____________________ very well
heat and electricity
define TEMPERATURE
a measure of how fast the particles in an object/substance are moving
what units can you use to measure volume?
milliliters, liters, centimeters cubed, etc. (many answers could be acceptable!)
what tool can you use to observe texture?
touch/finger/hand
the belief that everything is made of tiny particles (atoms) is called
atomic theory
true or false: elements can make up different things based on their atomic arrangement
TRUE! for example, carbon can be graphite or diamond!
describe three physical properties of sandpaper
many options: rough, bumpy, brown or orange, thin, low mass, low volume, room temperature...
__________ is the amount of space something takes up
volume
what tools can you use to measure mass?
balance/scale
atoms are made of _______________ (you need to name all three things!)
protons, neutrons, and electrons
what does the atomic number of an element tell us?
the number of protons that element has
fill in the blank: physical properties can be observed, described, or measured without ____________________________
changing the material
define MASS
the amount of matter in something
what is a tool you can use to measure volume?
graduated cylinder, beaker, ruler...