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Matter Chap. 2 & 4
| Question | Answer |
|---|---|
| Anything that has mass and takes up space. | Matter |
| The amount of space taken up by an object. | Volume |
| The amount of matter in an object. | mass |
| The measure of gravitational force exerted on an object. | weight |
| If you went to the moon, what would change; your mass, your weight, or both? | Your weight because the moon has less gravity than Earth. |
| A ping pong ball and a golf ball have similar volume, but since the golf ball has much more mass, it is (more/less/has the same) dense as the golf ball | More dense because there is more mass packed into the same amount of space (volume). |
| Formula for measuring a rectangular box- volume | length x width x height and the unit is cm3 (cubic centimeters) |
| What are the two properties of matter? | Mass and volume |
| The tendency of an object to resist change in motion (like starting to move or stopping) | Inertia |
| The more mass in an object, the ________________ the inertia. | greater - mass is also a measure of inertia. Remember that the more mass and object has, the harder it is to move. |
| A property of matter that can be observed or measured without changing the matter's identity (thermal conductivity, state, density, solubility, ductility and malleability) | Physical Properity |
| A change that affects one or more physical properties of a substance (ie: melting, freezing, dissolving, condensation, change in state) but does NOT change its identity | Physical change |
| The ability to be hammered or made into thin sheets | malleable |
| Ability to be pulled into thin wire | ductile |
| A measure of the amount of matter in a given amount of space | density |
| What are the two units of density? | g/mL or g/cm3 |
| The curve at the surface of a liquid (the level of liquid you measure in a graduated cylinder) | meniscus |
| Which weighs more; a pound of feathers or a pound of bricks? | They both weight the same amount. Brinks are denser than feathers. |
| Property of matter that is based on the ability to change into a new matter | Chemical Property |
| The ability of two or more substances to combine and form one or more new substances | Reactivity |
| What chemical property causes iron to form a new substance when exposed to oxygen? | Ability to rust |
| When one or more substances are changed into new substances that have new and different properties (ie: rusting, change of color, change of odor, production of heat or light) | Chemical Change |
| If I place oil and water in a graduated cylinder, which one will float and why? | Oil will float because it is less dense than water. |
| What is the density of water? | 1.0 g/mL |
| A pure substance that is composed of two or more different elements that have been chemically combined. | compound |
| A pure substance that cannot be separated into simpler substances by chemical or physical methods | element |
| Combination of 2 or more substances that are not chemically combined | mixture |
| Heat, chemical change, and electric current are different required ways to separate components in a (COMPOUND or MIXTURE) | compound |
| How do elements join to form compounds? | specific ratios (see your chapter 4 notes) |
| Combination of two or more substances that are not chemically combined | Mixture |
| In a solution, this is the substance that does the dissolving | solvent |
| In a solution, this substance is dissolved | solute |
| Ability of a substance to dissolve | solubility |
| Homogeneous mixture that appears to be one substance | solution |
| Heterogeneous mixture composed of large particle that settle out of solution if left undisturbed. | suspension |
| Heterogenous mixture composed of medium sized particles that do not settle out of solution | colloid |
| Hydrogen, which is very reactive and can cause an explosion when met with a spark, can chemically bond with oxygen to form water. If hydrogen is explosive, then how is it that water can put out fires? | When a compound is formed, it has different chemical and physical properties than the individual elements that make it up. |
Created by:
drighteous1
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