A group of students was asked to investigate how fast powdered juice dissolves in cold and in hot water. Which step shows the scientific investigation?

Which of the following is a part of the scientific process

 Ana wanted to find out if vinegar will remove the stain on the shirt. What variable should she keep constant in her experiment?

When you are listening to the warbling of the birds on a tree, you are making an observation. Which shows the difference between types of observation?

You noticed that a certain part of the garden is covered in shade and the other part of the garden is exposed to sunlight. You also noticed that the plants in the shaded area have yellow leaves and are shorter in height. What is the best hypothesis in the situation? 

Sodium chloride known as table salt is added to food to enhance its flavor and also used as preservatives to extend the shelf life of food. Which statement BEST describes the composition of the substance?

Carbon is an element with a symbol of C and atomic number of 6. What else can be inferred from the given statement?

Chemical symbols are used to represent different elements. How do we write the chemical symbol of an element?

Which of the following sets of elements was named using its Latin word?

 Which of the following groups of elements consist of metallic elements?

An element doesn't break apart but forms thin sheets when pounded with a hammer. It also conducts electricity very well. The element is most likely a ___.

 How do you describe a solution when a blue litmus paper is dipped into it and its color remains blue? 

How will you compare Copper and Iodine based on their properties?

Foods are made up of elements and the nutrients in foods are in the form of minerals. How do elements in food play an important role in the human body?

Which element makes up most of the Earth's atmosphere?

What makes water an important compound?

Why is Isopropyl Alcohol became widely in demand during the pandemic time?

Why is it important to read and examine the food labels of the product before buying?

Water (H2O) is made up of different elements, hydrogen, and oxygen. Is this type of combination a mixture or a pure substance?

Which of the following statements shows the difference between a compound and mixture?

Which of the following statements is true about pure substance?

Which statement describes a difference between a mixture and a substance?

 Methane (CH4) contains one atom of carbon and four atoms of hydrogen that are chemically bonded. It is a main component of natural gas. What type of matter is methane?

A bottle of dishwashing detergent contains a clear, viscous liquid. The label has a long list of ingredients, including water; sodium lauryl sulfate, fragrance, and blue dye #5. What can you infer about the material in the bottle from this label and the appearance of the liquid?

Jhon goes into the garden and digs up a shovel full of dirt. What type of matter is the soil that was dug up by Jhon?

Mr. Garcia has a bottle of rubbing alcohol, some candle flakes, a bottle of cooking oil, and a bottle of mineral water on his table. If Mr. Garcia asks you to prepare a homogeneous mixture using two of the materials on his table, which materials will you use?

A homogeneous mixture of two substances blended and mixed so thoroughly that you cannot see individual substances. Which of the following choices below is NOT a homogeneous mixture?

Soda cans are made up of Aluminum and other metals. Which classification of matter does Aluminum belong to?

It is important that we read the label of medicines before taking in orally. There are some antibiotics that need to be shaken before use. Which type of mixture do they belong to?

 This gas is essential for us, and all other aerobic organisms, to survive. We inhale it along with the air we breathe (of which it forms approximately 21%) and it then helps in the oxidation of glucose in our bodies. What is this gas that is essential to all living organisms?

Air is a mixture of several gases such as Nitrogen (78 %), Oxygen (21%), Argon(0.9%), and trace gases (0.1%) such as water vapor, methane and Carbon dioxide. Among these gases, which is classified as a compound?

Water is what all life in the world depends on. Which BEST describes water as a substance?

Deya made a saltwater solution by dissolving 1 tablespoon of salt in a glass of water. Which statement BEST describes the property of water as the solvent in the saltwater solution that she made?

Which of the solutes below tends to dissolve faster?

Why stirring is important when making a glass of milk?

Deya’s father pays a visit to the newly married couple. In the middle of their beautiful conversation, he asks for a cup of coffee. The father added more sugar to the coffee. How will the temperature of water affect the solubility of the sugar?

If we are to make a supersaturated orange juice solution, how can we distinguish if it’s already supersaturated?

Joey added 20mL of dish washing liquid soap in 1L of water. Which BEST describes the resulting solution?

Deya prepared orange juice for his husband. But Joey said it tastes so sweet and he seems to see some sugar at the bottom of the glass juice. When can we say that the orange juice prepared by Deya is saturated?

In making a home-made vinegar solution which can be used as a tile cleaner, you must dilute it by mixing125 ml vinegar with 375 ml water. Given these data, how will you compute the percentage by volume of vinegar?

The 500mL rubbing alcohol has 40%ethyl alcohol. How much alcohol is in the solution?

What is mass percent of 30g of sugar in the 100g of sugar solution?

What is the percent by mass of 8 g of caustic soda dissolved in 100g of water?