ATOMS
What are he two subatomic particles in a atom?
protons and neutrons
How many types of atoms can elements hold?
1 type of atom
How many atoms do compounds contain?
2
How many substances are mixtures made of?
Two or more
What is the atomic number of hydrogen?
1
What particle is negitivelly charged and where are they located?
Electron and the electron shells or levels.
What does the atomic number tell you?
How many protons and electrons there are
How are atoms bonded together?
chemically bonded
Are mixtures bonded together?
NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What is the atomic number of oxygen?
8
How many protons and electrons are in gallium?
31
Can elements be broken down into simpler substances?
NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Can compounds be broken down?
YES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What does homogenes means?
same all through out
6
How do you find the amount of neutrons in an atom?
atomic mass minus atomic number
What elements neutral atom has seventeen electrons?
chlorine
How do compounds brake down?
By chemical means
What does heterogenes mean?
Different all through out
What is the atomic number of mercury?
80
How many electrons are on each shell?
2 one the first shell 8 one the second 18 that make it stable
How many neutrons are in a lithium atom?
4
When magnesium metal is burned in the presence of oxygen,magnesium oxide is produced. is magnesium oxide an element, compound, or mixture?
It went through a chemical change that is why it is a compound
What is the difference between homogeneus and heterogeneus?
one is the same all through out and one is different all through out
What is the atomic number of roentgenium?
111