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Ptable, Comp/Mix
Elements, Atoms, Compounds, Mixtures, Scientific Method, Ptable, SI Units
| Question | Answer |
|---|---|
| What is the equation for finding the volume of a solid object? | Length x Width x Height |
| What is quantitative information? | Relating to, or involving the measurement of quantities or numbers |
| What's and independent variable? | What is purposely manipulated in an experiment |
| Four planes fly the same distance and each of their times are recorded. What is the controlled variable? | The Distance |
| What tool is used to measure volume? | Graduated Cylinder |
| Why is it important to do research BEFORE writing a hypothesis? | To make an educated guess and support it with facts |
| What is the SI unit for length? | Meter |
| What is the SI unit for volume? | Liter |
| What is the SI unit for mass? | Gram |
| What is the SI unit for temperature? | celcius |
| What is the controlled variable? | The variable that us keep the same throughout an experiment |
| How many milliliters are on a meter stick? | 1000 |
| Where are electrons found in an atom? | Outside of the nucleus |
| During an experiment, a student is able to separate a substance into its components through physical means because the components that make it up are not chemically combined. The substance is most likely a____________ | Mixture (heterogeneous) |
| The atomic mass of an element is the_______ | Number of protons and neutrons in an atom |
| What are the electrons in an atoms outermost shell called? | Valence electrons |
| The atom in a molecule are held together by______ | Bonds |
| An element is composed of only one type of _______ | Atom |
| What atomic model do we use today when studying atoms? | Bohr |
| Which type of mixtures can be separated by physical means? | Heterogeneous mixtures |
| A molecule of H2SO4 contains how many atoms? | Seven |
| How many valence electrons do halogens have? | Seven |
| What is the chemical name for the compound CO2? | Carbon Dioxide |
| Define a compound and give three examples | Two or more elements that are chemical combined. Example: Water, carbon dioxide, salt |
| Why is it impossible to see molecules with the naked eye? | There microscopic (to small) |
| Which elements are located in group 1 of the periodic table? | Alkali Metals |
| Argon has an atomic number of 18 and a mass number of 40. How many neutrons does a typical argon atom have? | Twenty two |
| How many electron shells does potassium have? | Three |
| List the steps of the Scientific Method in order? | Problem,Research, Hypothesis, Experiment, Collect Data, Analyze Data, Conclusion |
| Define quantitative and qualitative data? | Quantitative data deals with number. Qualitative relates to descriptive information. |
| What is a physical property? | A property describing an appearance |
| What is a chemical property? | A substance observed during a reaction (chemical reaction) |
| Give an example of a chemical change | Burning wood |
| Give an example of a physical change | Chocolate melting |
| Mass is defined as_____ | Amount of matter in an object |
| 0.09mg=_____g | 0.00009 |
| Protons have a_____charge | Positive |
| Neutrons have____charge | No |
| Electrons have a____charge | Negative |
| How do you find the atomic mass of an atom? | Add up the amount of protons and neutrons in an atom |
| What is an isotope? | When an atom has the same number of protons and a different number of neutrons |
| Mendeleev originally organized the elements according to their____ | Atomic mass |
| Define ductile | Something that can be stretched into a wire |
| Define fragile | Something that can be easily broken |
| Define luster | Something that is shiny,;shimmering,glossy |
| Define malleable | Something that can be bent |
| Where on the periodic table can you find metalloids? | On the staircase (right side) |
| 56hm=____mm | 5600000 |
| Carbonated soft drinks are a____ | Homogeneous mixture |
| Chocolate chip ice cream is a____ | Heterogeneous mixture |
| Italian salad dressing is a____ | Heterogeneous mixture |
| Beach sand is a_____ | Heterogeneous mixture |
| Carbon dioxide is a_____ | Compound |
| Blood is a_____ | Heterogeneous mixture |
| Nitrogen is a_____ | Element |
| Air is a______ | Heterogeneous mixture |
| Elements in the same group have similar characteristics? | True |
| Nobel gasses are very reactive? | False |
| Sodium is in group one and period two? | False |
| Nitrogen has five valence electrons? | True |
| Water evaporating is what type of change? | Physical |
| Chocolate melting is what type of change? | Physical |
| A change that doesn't produced a new substance? | Physical |
| The ability to see two substances separately after being mixed together? | Physical |
| Breaking glass is what type of change? | Physical |
Created by:
noaholguin
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