Mass
Subatomic Particles
Density
Changes
Periodic Table
100
What makes up everything?
Matter
100
An element is made up of how many different things?
Just one!
100
What is the formula for finding density?
100
Water freezes into ice. What kind of change is this?
Physical
100
What are the three main categories of the periodic table?
Metals, Metalloids, and Non Metals
200
What is the scientific definition of matter?
Anything that has mass and takes up space.
200
What are the positively charged particles in the nucleus called?
Protons
200
What is density?
How tightly packed matter is within a given space.
200
Dynamite exploding is what kind of change?
Chemical change.
200
Which is the most reactive non metal?
Hydrogen
300
What is unit of measurement for mass?
Grams
300
What are the negatively charged particles outside of the nucleus called?
Electrons
300
What is the density of water?
1.0 g/cm3
or
1.0 g/mL
300
Which type of change cannot be easily undone.
Chemical. You can't unbake a cake.
300
What are two common properties of metals?
-Good conductors
-Usually solid at room temperature
-Malleable and ductile
-High melting point
-High or shiny luster
400
What tool do you use to measure mass?
A scale or balance
400
What do we call two or more different atoms that are chemically bonded?
A molecule.
400
If an object has a density of 1.03g/cm3, what will that object do in water?
Sink
400
Your teacher dramatically rips up and crumples a paper. What kind of change is this?
Physical.
400
What is something unique about rare earth metals compared to regular metals?
-Found deep in earth
-Hard to extract
-Tarnish quickly
-Very magnetic
500
What is the difference between mass and weight.
Mass doesn't change depending on where you are, but weight is based on relative gravity.
500
How many known elements are there?
118
500
When pouring different liquids into a graduated cylinder, what will they do?
They will settle with the densest liquid on bottom, and get less dense moving up.
500
What are two different evidences that a chemical change has occurred.
-Created a new substance
-Cannot be undone
-Production of light or sound
-Change in temperature or color
-Production of gas
500
What are the metalloids, including the 7th sometimes metalloid in order. Yes, you can just write the symbol.
B- Boron, Si- Silicon, Ge- Germanium, As- Arsenic, Sb- Antimony, Te- Tellurium, Po- Polonium