Atoms
What is the center of an atom called?
The Nucleus
What does each box on the periodic table represent?
An element
What is a molecule made out of?
Two or more atoms bonded together
What do we call the "glue" that holds atoms together?
A chemical bond
Anything that has mass and takes up space
What three particles make up an atom? (what are the three parts of an atom)
Protons, neutrons, and electrons
What is the smallest part of an element?
An atom
What is a compound?
A substance made of two or more different elements
What kind of bond happens when electrons are shared?
Covalent bond
What are the three states of matter?
Solid, liquid, and gas
What charge does a proton have?
Positive (+)
The atomic number
The commonly known element water (H2O) is a compound, what two elements make it?
Hydrogen and oxygen
What kind of bonds happens when electrons are transferred?
Ionic bond
Which state of matter takes shape?
Solid
What charge does an electron have?
Negative (-)
How many atoms in total are in one molecule of H2O?
3. (2 hydrogen + 1 oxygen)
Carbon dioxide (CO2) has how many oxygen atoms?
Two
What kind of bond happens between metals?
Metallic bond
What happens to matter when heat is added?
It moves faster, and spreads apart
What charge does a neutron have?
No charge (neutral)
Which elements symbol is "O"
Oxygen
True of false: all molecules are compounds
False (some molecules have only one element, like O2)
True or false: a covalent bond happens with metal
False. They only happen with nonmetals
What is it called when a cold drink "sweats" on a cool day?
Condensation