Question | Answer |
What is mass? | The amount of matter in an object |
What is volume? | The amount of space an object fills |
What is density? | The amount of matter in a given volume |
What do elements in the same group have in common? | # of valence electrons |
What do elements in the same period have in common? | # of electron shells |
What charge does a proton have? | Positive |
What charge does a neutron have? | None/neutral |
What charge does an electron have? | Negative |
What are the large numbers in chemical equations called? | Coefficients |
What do the large numbers represent? | Molecules |
What are the small numbers in chemical equations called? | Subscripts |
What do the small numbers represent? | Atoms |
What is an element molecule? | A molecule composed of only one element |
What is a compound molecule? | A molecule made of more than one element |
What is a chemical change? | A change in which a chemical reaction takes place |
What are the five evidences of a chemical reaction? | Solid precipitate forms, temperature change, bubbles/gas, unexpected color change, odor produced |
What is the Law of Conservation of Mass? | Matter cannot be created or destroyed only transferred |
What is an observation? | Information gained using the five senses |
What is an inference? | What you think based on your observations |
What is a hypothesis? | You prediction for what will happen next using observations and inferences |
What type of statement do you use when making a hypothesis? | If this... then that. |
What is the formula for speed? | Distance divided by time |
What is the formula for force? | Mass times acceleration |
What is Newton's first law? | Law of Inertia |
What is Newton's second law? | Law of acceleration |
What is Newton's third law? | Law of action and reaction |