Elements, Compounds, Mixtures
True or False: Salt (NaCl) is an element
False
This state of matter has a definite shape, but no definite volume.
True or False: States of matter is a chemical property
False
What is the unit for mass?
grams
What is the phase change from solid to liquid?
Melting
Which of these is a homogeneous mixture?
A: Water and ice
B: Lemonade
C: Trail Mix
D: Orange juice with pulp
B: Lemonade
Which state of matter has the highest energy?
Plasma
Rusting is an example of what?
Chemical property
What is the formula for density?
Mass/Volume
Horizontal rows on the periodic table.
Periods
What is it called when two atoms of the same element are together?
Diatomic Elements
Matter where particles move at high energy
Gas
State the Law of Conservation of Matter.
Matter cannot be created or destroyed but can be transformed from one form to another.
On the density triangle: what is located at the top of the triangle?
Mass
The most reactive nonmetal group.
Halogens
Between elements, compounds, homogeneous mixtures and heterogeneous mixtures, where are particles uniform?
Homogeneous Mixtures
Phase change from gas to solid.
Deposition
Volume is an example of what?
Physical property
What are the units for density of regular objects?
g/cm3
What causes energy to change during the phase change from solid to liquid?
Thermal energy (heat)
How can you tell if particles are diatomic elements vs. compounds in a container?
Diatomic elements are the same size atoms, compounds are different size atoms
Where is the most common example where we see plasma on Earth?
Lightning
Chemical properties are different than physical properties because they form what?
A regular object has a length of 7 cm, a width of 6 cm, and a height of 4 cm. What is mass if density is 1.30 g/cm3?
218.40g
What is the volume of an object that has a mass of 45 g and a density of 2.5 g/mL?
18 mL