Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Midterm Study Guide
| Question | Answer |
|---|---|
| What is the formula for density? | Mass/Volume |
| How many weights does a triple beam balance consist of? | Three |
| What is an atomic number? | The number of protons in an atom |
| What are the elements on the periodic table increasing by? | Atomic number |
| What are all the parts of an atom? | Nucleus, Protons, Neutrons, and Electrons |
| What charge do protons have? | Positive |
| What charge do neutrons have? | Neutral |
| What charge to electrons have? | Negative |
| In the chemical compound K1Si3 how many atoms of Silicon are there? | 3 |
| What is an isotope? | An atom of the same element with the same number of protons but a different number of neutrons. It has the same atomic number but a different atomic mass. |
| When an atom gains electrons, the ions become __________ | negatively charged |
| When an atom loses electrons, the ion becomes __________ | positively charged |
| How are atoms arranged in solids? | tightly packed |
| How are atoms arranged in liquids? | close together, but still able to move |
| How are atoms arranged in gases? | far apart |
| What is condensation? | when a gas becomes a liquid |
| What is sublimation? | when a sold becomes a gas |
| What is evaporation? | when a liquid becomes a gas |
| What is a melting point? | the point at which an element melts |
| What is a freezing point? | the point at which an element freezes |
| What is a homogeneous mixture? | a mixture that cannot be seen (lemonade) |
| What is a heterogeneous mixture? | a mixture that can be seen (chex mix) |
| When a substance loses heat energy, the temperature __________ | decreases |
| When a substance gain heat energy, the temperature __________ | increases |
| What color does litmus paper turn when making contact with acid? | red |
| What color does litmus paper turn when making contact with bases? | blue |
| Endothermic reactions feel __________ | cold |
| Exothermic reactions feel __________ | hot |
| Bases are __________ than 7 on a pH scale. | higher |
| Acids are __________ than 7 on a pH scale. | lower |
| The neutral number on a pH scale is ____. | 7 |
| Formation of bubbles is result of a __________ ___________. | chemical change |
| Cutting paper is an example of a __________ __________. | physical change |
| Burning wood is an example of a __________ __________. | chemical change |
| The 3 factors that increase reaction rate are: | temperature, surface area, catalyst, and concentration |
| What is located on the left side of a chemical equation? | reactants |
| What is located on the right side of a chemical equation? | products |
Created by:
rylie.guerin
Popular Physical Science sets