Matter
This is what a single element is called
What is an atom?
The set of electrons in the outermost shell of an atom that are involved in bonding
What are valence electrons?
Adding soap to water stopped this property from being displayed in our experiment
What is surface tension?
The following is an example of this kind of reaction: 2Na + Cl2 --> 2NaCl
What is a synthesis reaction?
We demonstrated this Law of Newton’s with an egg and a cup of water
What is Newton’s first law? (an object at rest will stay at rest/an object in motion will stay in motion)
This is what a single element is called
What is an atom?
The number of protons in an atom
What is the atomic number?
The tendency of water molecules to “stick” together
What is cohesion? (or) What is hydrogen bonding?
A chemical reaction that releases energy to its surroundings and causes the temperature to rise
What is an exothermic reaction?
A force that opposes motion, resulting from the contact of two surfaces
What is friction?
This is the substance that does the dissolving in a solution
What is a solvent?
A chemical bond in which two atoms share one of more pairs of valence electrons
What is a covalent bond?
This property of water is lower in ice and higher in liquid water, preventing the oceans from freezing
What is density? (caused by hydrogen bonding)
A chemical reaction that absorbs energy from its surroundings and causes the temperature to drop
What is an endothermic reaction?
When you push on a door, the door pushes on you. What law explains this?
Newton’s third law
This form of a substance can change shape but has a definite volume
What is a liquid?
This is the balanced chemical equation for forming carbon dioxide
What is C2 + 2O2 --> 2CO2 ?
This is how plants can pull water up to the top of a plant
What is adhesion?
This kind of reaction involves oxygen
What is a combustion reaction?
We feel the affect of this law when a car accelerates and we’re pushed back against our seat
What is Newton’s second law? (net force = mass * acceleration)
A change of color and production of a gas are examples of this kind of property change
What is a chemical change?
This kind of bond results in positively and negatively charged elements that are attracted to one another
What is an ionic bond?
This is what causes hydrogen bonding in water
What is polarity? (or) What is the shape of water molecules?
The following is an example of this kind of reaction: Pb(NO3)2 + 2HCl --> PbCl2 + 2HNO3
What is a double replacement reaction?
Friction that opposes the initiation of motion
What is static friction?