Atoms
Atoms are the basic unit of _______________
matter
Is salt water an element, compound or a mixture?
Mixture
What state of matter has a fixed shape and volume?
Soilid
If you mix 18g of carbon dioxide with 22g of water, what is the total amount of product you will end up with?
40g
What kind of cells are animals, plants, fungi and protists?
Eukaryotic
If you saw a drawing with two of the same shape and color connected, what would you be looking at?
diatomic element or a molecule
Melting is an example of what kind of property
If you increase the temperature, what happens to the particles in matter
they speed up and spread apart
What law states that mass can not be created or destroyed?
Law of Conservation of Mass
On a microscope, how could you tell the difference in prokaryotic cell and a eukaryotic cell?
nucleus
what is the difference in a mixture and a compound?
mixtures are combined physically. compounds are combined chemically
A salad is what kind of mixture?
Heterogenous
Which state of matter has the weakest intermolecular attractions?
Gas
Two chemicals are mixed in a test tube and a chemical reaction takes place. If this reaction is endothermic and the test tube is touched, which of the following best describes what is felt
It would be cold
What are the two differences in plant and animal cells?
Cell Wall, Chloroplast and size of vacuoles
How many atoms are found in 9 molecules of nitrogen gas?
18
Water bubbling and changing into steam is what kind of property?
Dew forming on grass is an example of what state change
condensation
During a class assignment, students mix two chemicals and observe the temperature of the mixture increases. What does this show
Exothermic Reaction
Fat and Muscle cells need extra of this organelle?
Mitochondria
What three things make up and atom?
Hint: there is a positive, negative and neutral
Protons, Electrons and Neutrons
What kind of property changes the identity of the substance?
chemical
Dry ice goes through what process most commonly?
Sublimation
If 4 H2 atoms combine with 2 O2 atoms, how many water molecules do you have?
4
Many cells combined make up a ____________
tissue