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What is matter?
Anything that has mass, weight, and takes up space (Volume)
In which state of matter are molecules held in a fixed pattern but able to vibrate?
Solid
What makes up the nucleus of an atom?
Protons and Neutrons
What state of matter has molecules that are packed together but freely move?
Liquid
This state of matter has molecules that are widely separated and move very fast.
Gas
What is a Molecule made out of?
Two or more atoms bonded together
In a juice mix, there is a powdered drink mix and water, which one is the solvent and which one is the solution?
The solute is the powdered drink mix, and the solvent is the water. Why? The solute is the powdered drink mix, and the solvent is the water, because the powder is dissolved by the water to form the solution or the drink.
Mixture and compound, which one is physical and which one is chemical?
Compound is chemical and Mixture is physical
What is an Element?
A pure substance made of only 1 type of atom that cannot be broken down further into other substances.
Playing with playdough is an example of..
Physical change, why? It is still playdough and it has not became something new.
When a banana turns brown and mushy on the counter, it is an example of a....
Chemical change! why? It changes color, and it gets an unusual odor when it rots
Two students make lemonade. They use the same amount of water, but Student A adds 2 scoops of powder while Student B adds 5 scoops. Who made the sweeter solution?
Student B, because there is more solute (powder) in the same amount of solvent (water)
Alex wants to boil water for his tea, and he watches as it changes from a liquid to a gas on the stove. What type of change is this?
Physical change, why? Its state of matter has changed from liquid to gas, but not its properties; it is still water.
On the periodic table, how many main types of elements are there?
The four main types of elements are: metals, nonmetals, metalloids, and noble gases
Homogeneous and heterogeneous are playing hide-and-seek; one of them is secretly the best at the game of staying hidden. Who is it?
Homogeneous, why? Homogeneous mixtures are evenly distributed, like a smoothie, it's mixed so well that you can’t see each part individually; they’re “hiding.”
What is a molecule that is made up of atoms from two or more different elements?
Compound
Samantha puts her leftovers in the fridge but she forgets about it weeks later, when she opens it up she notices a foul stench coming from it, what type of change is this?
Chemical, why? a change in the odor has occured, which is a sign of chemical change.
During a science experiment, Andrew mixes two clear liquids. The mixture becomes warm, turns cloudy, and forms a new solid that sinks to the bottom. Is this a physical or chemical change?
Chemical change, why? There was a change in temperature, a formation of a new solid, and a new substance formed
An atom has 11 protons, 11 electrons, and 12 neutrons. What is the atomic number, and what is the mass number?
Atomic number is 11, mass number is 23
Proton, Neutron, and Electron are going to a party. Each brings six friends along. What element do they all form together? (Which element has 6 as the atomic number?)
Carbon, why? because carbon is made up of six protons, six neutrons, and six electrons!
Sally mixes up sand and water, Is this a homogeneous or heterogeneous mixture?
Heterogeneous, why? because you can see the different parts and they are not evenly mixed