Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
23 Cards in this Set
- Front
- Back
|
What happens when a chemical change occurs?
|
When one kind of matter changes into a different kind of matter with different properties.
|
|
|
Physical Change
|
When matter keeps the same chemical properties
|
|
|
Solids,Liquids and Gases
|
1. Gas: Does not have a definite shape or volume.
2. Liquids: Don't have their own shape,volume does not change 3. Solids: volume does not change the particles in a solid vibrate, own shape |
|
|
Describe a solid
|
volume does not change, the particles in a solid vibrate in place.
|
|
|
What is the temperature at which a liquid turns into a solid?
|
Freezing point 32 degrees F / o degrees celcius
|
|
|
Condensation
|
Gas turns into a liquid
|
|
|
Evaporation
|
When particles leave a liquid and become a gas
|
|
|
What type of chemical reaction is the following: Hydrogen peroxide can break apart to form water and oxygen gas
|
Decomposition reaction
|
|
|
What is chemical change?
|
a chemical change occurs when one kind of matter changes into a different kind of matter. Example: Food. When cooked, it looks and tastes different.
|
|
|
What does the word product mean?
|
a substance made by a reaction.
|
|
|
What is a product of a chemical reaction?
|
When magnesium and oxygen are combined it makes Magnesium Oxide. It is the product of the chemical reaction between the magnesium and oxygen.
|
|
|
What is used to identify acids and bases?
|
special paper called universal indicator paper
|
|
|
Be familiar with chemical equations and be able to label the REACTANT and PRODUCT
|
What is the reactant and product below:
2Mg + O2 > 2MgO Product = 2MgO Reactant= 2Mg + O2 |
|
|
What can only be separated by a chemical process?
|
COMPOUND
|
|
|
Give one example of how a chemical reaction can be used to separate important elements:
|
Limestone can break down by pouring vinegar on it.
|
|
|
List in order particles with the least energy to particles with the most energy...out of the three states f matter which has the least amount of energy and which has the most amount of energy?
|
Solid, Liquid, Gas
|
|
|
What are the three kinds of chemical reactions?
|
decomposition,combination, replacement
p.58 |
|
|
What color does universal paper turn when exposed to bases?
|
green, blue and purple
|
|
|
What color does universal paper turn when exposed to acids?
|
orange or red
|
|
|
LESSON 1 Recap
|
Lesson 1: Physical changes do not change the chemical properties of a substance
@ chemical changes occur when one substance is chemically changed into a new substance with different properties |
|
|
LESSON 2 Recap
|
Lesson 2:
* When matter changes state,a physical change occurs * A substance's melting temperature is a physical property that can be used to help identify the substance * Metals have a wide range of melting temperatures |
|
|
LESSON 3 Recap
|
* A chemical equation shows what happens during a chemical reaction
It includes both reactants and products * Three types of chemical reactions are combination, decomposition, and replacement reactions |
|
|
LESSON 4 Recap
|
* Chemical properties of substances can be used for many practical purposes
* Chemical properties can help identify substances and separate mixtures |
