This is anything that has mass and takes up space
matter
Why doesn't water and oil mix together?
The density of oil is less than water, therefore it floats on top of the water
What is the formula for density?
Density = mass/ volume
What is the smallest part of an element?
atom
This subatomic particle has a negative charge
electrons
Density is a _________ property
physical
A change from one state of matter to another (example solid to liquid) is called a _______ change
phase
An element cube has a mass of 200g and a volume of 50cm3. What is the density of the box?
4 g/cm3
This is what we call the "rows" on the periodic table (Hint: There are 7 of them)
periods
This subatomic particle has no charge
neutrons
This tool is used to measure mass
Triple Beam Balance
Which of the following is a heterogenous mixture?
Tea
Sand
Water
Coffee
Sand
This law states that "when the volume of a gas is decreased, there is an increase in pressure"
Boyle's Law
This is what we call columns on the periodic table (Hint: There are 18 of them)
groups
The number usually at the top left corner of an element box is called what?
The Atomic Number
Flammability is a ______ property
chemical
This state of matter has a definite shape and a definite volume
solid
A brick has a mass of 150g. The length is 10cm, the width is 3cm, and the height is 1cm. What is the density?
5g/cm3
These types of elements are shiny, ductile, and good conductors of electricity
metals
The number at the bottom of the element box (usually a decimal) is called what?
The Atomic Mass
Physical properties can be observed and/or measured without changing the substances ___________
composition
This state of matter has no definite shape and no definite volume
Gas
There is 400 mL of water in a graduated cylinder. We add a marble to the graduated cylinder and the water rises to 410 mL. The mass of the marble is 20g. What is the density of the marble?
(Hint: This is a 2 step problem. Think about the way you find volume of an irregular shaped object)
2g/mL or 2g/cm3
Name the 3 subatomic particles of an atom
Protons, Neutrons, and Electrons
How do you determine the number of neutrons an atom has?
Atomic Mass (rounded)- Atomic Number = neutrons