Question | Answer |
What measures the amount of gravity that pulls on an object? | Weight |
How is mass measured? | grams/kg |
How is weight measured? | Pounds/ounces |
What tools do you use to measure mass? | electronic balance or triple beam balance |
What tools do you use to measure weight? | bathroom scale or spring scale |
What is an atom? | smallest particle of nonliving matter that can still be identified as that matter |
What measures the amount of "stuff in an object"? | Mass |
What are the 3 parts of an atom? | protons, neutrons, electrons |
Protons | Positive charge (+) and is inside the nucleus |
Neutrons | neutral charge (no charge)(n) and is inside the nucleus |
Electrons | negative charge (-) and fly around the outside of the nucleus |
How are atoms named? | named by the number of protons that they have in the nucleus |
Where do you find the names of atoms? | Periodic Table |
What gives the atom its name? | The number of protons |
Atom | smallest piece |
What is a whole lot of the same kids of atom in a group called? | An element |
Where do we find information about elements? | Periodic Table of Elements |
According to our book, how many known elements are there? | 116 |
What is the atomic number? | The number of protons in one atom of that element |
What is the atomic symbol? | shortcut way of writing the name of an element |
What is a compound? | Something that is made of more than one element |
What is a molecule? | The smallest part of a compound and it has to contain more than one element |
What is a compound? | A bunch of molecules that are the same kind. |
Does the state of matter affect the mass of an object?
* | No, the state of matter does not affect the mass of an object. The amount of stuff in an object stays the same no matter what state it is in. |
Atom is to ___________as molecule is to _______ | Atom is to element as molecule is to compound. |
What are the 3 common states of matter | Solid, liquid, gas |
Describe a solid. | *atoms are tightly packed together
*rigid (doesn't move, stiff, definite shape)
*have a definite, unchanging volume |
Describe a liquid. | *atoms loosely packed; slip past each other
*takes the shape of its container
*has a definite volume (unchanging) |
Describe a gas. | *atoms are very far apart
*atoms move rapidly (fast)
*atoms ove as far as they can until something stops them
*no definite shape
*no definite volume |
What happens to the states of matter when you add heat or increase temperature? | Changes from a solid to liquid to gas |
What happens to the states of matter when you take away heat or decrease the temperature of matter? | Changes from a gas to a liquid to a solid |
What is the 4th state of matter? | Plasma |
Describe plasma | Not found on earth naturally |
What does classify mean? | to sort into groups according to a specific attribute (something that objects in each group have in common) |
What are properties of matter? | What we use to classigy the matter (attributes) |
What are the physical properties of matter? | Things you observe by using your senses. |
Give some examples of physical properties of matter. | mass, volume, length, weight, state of matter, temperature, speec, color, shape, smell, taste |
What is a physical property of matter? | Something you observe by using your senses. |
What is a physical change? | changes the way the matter looks, sounds, feels, tastes, smells. Will not change what the matter is. |
What are some examples of physical changes? | melting ice, freezing water, tearing paper. |
What is kinetic energy? | energy of movement |
What type of kinetic energy do solids have? | very little kinetic energy; atoms are tightl packed, barely vibrating, in a rigid pattern. |
What type of kinetic energy do liquids have? | some kinetic energy; atoms loosley packed, slip past each other, somewhat of a pattern in arrangement but it will change according to container. |
What type of kinetic energy do gases have? | lots of kinetic energy; atoms moving fast , no where near each other, no pattern, taking up all available space. |