Periodic Table
What is the atomic number for Chlorine
17
What is matter?
Define physical change
change that alters a substance's form or state but not its chemical composition.
How many atoms are in NaPO3
5
Define molecule
A molecule is a group of two or more atoms bonded together.
What element has the symbol 'Xe'?
Xenon
Given an example of matter
Something that has mass and takes up space. ex) Humans
What is a chemical change?
change that creates a new substance with different properties
How many atoms are in NH4Br
6
What is a compound?
A compound is a substance made of two or more different elements chemically bonded
What group is Au in?
Transition Metal
In this state of matter, particles are far apart and move randomly, filling any container they are in.
What is gas
When you bake a cookie, the dough undergoes this type of change
What is chemical change?
Name the elements: NaPO3
Na (Sodium)
P (Phosphorus)
O (Oxygen)
formula for density
Density = mass / volume
What are the bottom two rows of the periodic table called?
What are the Lanthanides and Actinides?
This state of matter takes the shape of its container but has a definite volume.
what is liquid
When you rip a piece of paper, you are performing this type of change.
physical change
Name the elemnts in NH4Br
Nitrogen
Hydrogen
Bromine
A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density?
2.7 g/ml
What group is Silicon and Antimony in?
Metalloids
What is phase change is happening when gas turns into liquid. how is the energy moving?
condensation. less energy (energy leaving)
what are two examples of physical change?
something that changes its state but not composition
C2H4O2 What elements are involved and how many atoms
carbon
hydrogen
oxygen
8 atoms
When is the chemistry test?
Thursday, October 30