Science 7th 1006
Terms
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- What is WEIGHT?
- A measure of the force of gravity of an object.
- What is MASS?
- The amount of matter in an object.
- What is the INTERNATIONAL SYSTEM of UNITS?
- How scientists prefer to measure the properties of matter.
- List units measures of volume.
- L, mL, cL
- What is VOLUME?
- The amount of space that matter occupies.
- What is MATTER?
- Anything that has mass and takes up space.
- What is CHEMISTRY?
- The study of the properties of matter and how they change.
- What is a SUBSTANCE?
- A single type of matter that has a specific set of properties.
- Name the two types of Properties.
- Chemical and Physical
- Describe chemical properties.
- A form of potential energy that is stored in chemical bonds between atoms.
- Describe physical properties.
- Characteristics that you can see and feel without changing it into another substance.
- What are ELEMENTS?
- A pure substance that cannot be broken down by any means into another substance.
- What is an ATOM?
- The basic particle from which all elements are made.
- What is a CHEMICAL BOND?
- The force that holds two atoms together.
- What is DENSITY?
- D = M/V
- What are two types of Matter?
- Substances and Mixtures
- What are SUBSTANCES?
- A single type of matter that has a specific set of properties. Includes elements and compounds that are formed by molecules and atoms.
- What are MIXTURES?
- Two or more substances mixed together (not in fixed proportions and not with chemical bonding). Each substance retains its own chemical identity.
- What are HETEROGENEOUS MIXTURES?
- When you can see the mixture.
- What are HOMOGENEOUS MIXTURES?
- When they are so well combined that you cannot see the original ingredients.
- Describe PHYSICAL CHANGES.
- ALWAYS include changes in identity.
- Describe CHEMICAL CHANGES.
- ALWAYS include changes in energy.
- Name the six forms of ENERGY.
- Potential, Kinetic, Chemical, Electromagnetic, Electrical, and Thermal.
- What is POTENTIAL ENERGY?
- Stored energy.
- What is KINETIC ENERGY?
- Energy in motion.
- What is CHEMICAL ENERGY?
- Occurs when particles are arranged in certian ways.
- What is ELECTROMAGNETIC ENERGY?
- The energy associated with electric or magnetic fields.
- What is ELECTRICAL ENERGY?
- Energy that occurs when objects with different electrical charges are separated.
- What is THERMAL ENERGY?
- Energy which is characteristic for thermal neutrons at room temperature.
- Describe ENDOTHERMIC AND EXOTHERMIC Energy.
- Absorbed (Exo) and Given Off (Endo)