What am I?
Group of molecules that are mixed and evenly distributed in a system and appear as one composition but composed of two substances.
It's a HOMOGENOUS mixture.
SOLUTION
Give the 2 Types of Solution according to its how they are made
Naturally occurring Solution and Manufactured Solution
Which substance is considered a strong acid and describes the change of litmus paper? (kalamansi juice, milk, muriatic acid, vinegar)
muriatic acid - From Blue Litmus Paper to Red
Differentiate Independent from Dependent Variable.
The independent variable is the cause or value you are manipulating in the study.
The dependent variable is the effect. Its value depends on changes in the independent variable or responding variable.
5 Steps of Scientific Method
1. Ask questions
2. Make a hypothesis
3. Test the hypothesis
4. Analyze results
5. Draw conclusions.
The substance dissolves and is usually found in less amounts.
Solute
Give the 2 Components of a Solution
Solute and Solvent
In the preparation of some candied fruits, sliced fruits are cooked in a solution of sugar in water. Upon cooling, sugar crystallized on the surface of the fruit pieces. What type of sugar solution was used?
A. dilute
B. saturated
C. unsaturated
D. supersaturated
D. supersaturated
Give at least 2 characteristics of metals.
They are shiny, ductile, malleable, conductor of heat.
A farmer experiments with 2 types of fertilizers on his mango plants to see which will hasten the growth of his plants. What is the dependent variable?
growth of the plants
Process used to separate salt from water in a seawater mixture.
Evaporation or Distillation
Give the 2 Concentration of Solution Qualitatively
Diluted and Concentrated Solution
Give one reason why people stir coffee or juice in water after they have added sugar?
A. Stirring will make the solution sweeter.
B. Stirring will help sugar mix evenly in water.
C. Stirring will make the taste of the solution good.
D. Stirring will allow faster spreading of solute particles in the solvent.
D. Stirring will allow faster spreading of solute particles in the solvent.
(50 mL /400 mL) x 100 = 12.5%
Step of the Scientific Method that involves making "EDUCATED GUESS" about what might happen in the investigation based on prior knowledge or research.
Formulating Hypothesis
Concentration of Solution Qualitatively, where:
A larger mass of dissolved solute for a certain quantity of solvent.
CONCENTRATED SOLUTION
Give the symbols of the following:
1. Gold
2. Helium
3. Potassium
4. Sodium Chloride
5. Zinc Oxide
1. Au
2. He
3. K
4. NaCl
5. ZnO
Which is more concentrated, a solution containing 10 grams of salt in 50 grams of water or a solution containing 40 grams of salt in 80 grams of water?
A. 10 grams of salt in 50 grams of water is more concentrated.
B. 40 grams of salt in 80 grams of water is more concentrated.
C. 10 grams of salt in 50 grams of water and 40 grams of salt in 80 grams of water are both concentrated.
D. Neither the 10 grams of salt in 50 grams of water nor the 40 grams of salt in 80 grams of water is concentrated.
B. 40 grams of salt in 80 grams of water is more concentrated.
What is the percentage concentration of 25 grams of coffee in 75 grams of water?
25 grams / (75 grams + 25 grams) =
(25 grams /100 grams) x 100 =
25%
Give 1 example of metalloid with its symbol.
Silicon - Si
Antimony - Sb
Tellurium - Te
Astatine - At
Germanium- Ge
Boron - B
Pure Substance or Mixture:
1. Air
2. 24K gold jewelry
3. Soda (carbonated beverage)
4. Sodium bicarbonate (NaHCO3),
1. Mixture
2. Pure Substance
3. Mixture
4. Pure Substance
Give the 4 Factors Affecting Solubility
1. Effect of Stirring
2. Particle Size
3. Effect of Temperature
4. Nature of Solute
Describe the type of solution:
When a pinch of sugar is stirred in a glass of water, the sugar is readily dissolved.
unsaturated solution / liquid solution . manufactured solution
True or False:
1. Calcium carbonate (CaCO₃) is a compound is commonly used as a fertilizer to provide essential nutrients to plants.
2. Calcium (Ca) which is found in milk, makes our teeth and bones healthy.
1. True
2. True