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Science finals 1
| Matter and atoms | Answer | ELEMENTS, COMPOUNDS,MIXTURE | Answers | Phases | Answers | Density | Answers |
|---|---|---|---|---|---|---|---|
| Which subatomic particles are found IN the nucleus? | Protons and Neutrons | Can be found on the periodic table. | element | What are the 3 phases of matter? | solid, liquid, gas | What is the density of water? | 1 g/mL OR 1g/cm3 |
| Which subatomic particle is found moving AROUND the nucleus? | Electrons | Cannot be separated. | element | Is a phase change (for example, liquid changing to solid) a physical or chemical change? | Physical change (example: ice and water vapor are BOTH water, it's just the particles that make up the water are arranged differently) | What is the density of an object if it floats on water? | Less than 1 g/mL |
| What is the mass number of this atom? | Mass number = protons + neutrons | Not chemically bonded together. | mixture | What is the density of an object if it sinks in water? | More than 1 g/mL | ||
| Has a chemical formula. For example, HCl | compound | If density is mass divided by volume, what is the density of an object that has a mass of 30 grams and a volume of 5 cubic centimeters? | D = m = 30 g = 6 g/cm3 V 5 cm3 |