The ability of gases to be stored in a closed container is called _____.

The force of attraction between molecules in gases is ______.

What is a type of gas that is colorless, tasteless, invisible, can be squeezed or compressed and pushed from both sides?

Air has heaviness called weight.

Solid has _____ mass, volume and shape.

Liquid has _____ mass and volume and takes the shape of the container.

Gas has _____ mass, no definite volume and no definite shape.

Oxygen, carbon dioxide, nitrogen and helium are examples of ______.

The fourth state of matter is called _______.

What is made up of free electrons and ions of an element such as neon (Ne)?

Select all the characteristics of plasma.

The 5th state of matter is called ______.

Which of the following are examples of plasma?

Which of the following are examples of plasma?

These materials are usually solid, shiny, strong and malleable. They play a vital role in construction, tool production and jewelry making.

This material can be stretched and is used to make objects like erasers, rubber bands and tires.

These materials have different properties. They are durable and waterproof, do not decay, some transparent and light, others tough and difficult to break.

Burning of plastics is bad because________.

These materials have high quality so they are expensive, durable and strong. They come from trees made into furniture and other products.

The denser the wood, the greater the hardness and strength it possesses.

What makes the soil fertile?

What is used to kill harmful insects that destroy plants?

What helps make your body resistance stronger?

A product used in every home for cleaning.

Select all that apply.

When detergents are not used properly,

Agricultural chemicals like pesticides and insecticides help increase crop production but when handled improperly, they _______.

Select all that apply.

CFCs or Chlorofluorocarbons are used as propellants in aerosols and fire extinguishers. What is its harmful effect?

Gasoline, crude oil and coal are called ______.

Fossil fuels are used _____.

Select all that apply.

What takes away the oxygen from our body cells causing serious diseases?

When fuels are burned, they release air pollutants like nitrogen oxide and sulfur oxide.

When nitrogen oxide and sulfur oxide combine with moisture or rain in the atmosphere, _____ is produced.

What are the harmful effects of acid rain?

Select all that apply.

Where should cleaning products, insecticides and disinfectants be placed?

When using chemicals, always _______.

Select all that apply.

Flammable products like gasoline, alcohol and kerosene must be placed away from the stove, fireplace or other sources of heat.

It is unwise to tightly cover flammable containers and store them in locked cupboards or cabinets.

Never use gasoline or paint thinner to start a barbecue fire or bonfire. These can easily catch fire.

Vitamins and medicines should be placed in a medicine cabinet with a lock.

It is okay to take expired medicines and vitamins.

If you take medication, you can improvise. There is no need to follow the prescribed recommended dosage.

The following are precautionary measures in handling substances.

Select all that apply.

Dispose used materials and dangerous substances properly.

Avoid burning plastics.

A product label gives information about a product such as ______ and _______. It is important to read the product label and follow its instructions.

Select all that apply.

For external use only.

Handle with care.

Warning: may irritate your eyes.

Caution: it can burn your skin.

The above are all called ______.

This hazard symbol- whether solids, liquids or gases- are capable of catching fire in the presence of a spark or open flame under normal conditions.

This symbol means it can cause death or immediate injury when a person is exposed to a small amount.

These symbol include caustic and acid materials that can destroy the skin and even metals.

Which do not exist in 3 states of matter?

What is the hotness or coldness of a material measured on a definite scale.

A ______ makes a new substance.

The shredding of papers and crumpling them are examples of _______.

Toasting bread and burning wood are examples of________.

The breaking of tiles and demolishing a car are examples of_____.

A change in size, shape, form, or phase is called ______.

A change in phase , like from one phase to another, is called _____.

Heat may be or may not be applied in order for chemical change to happen.

The following are called ______.

a.rusting of iron

b.roasting a marshmallow

c.explosion of fireworks

d.rotting of food

When baking soda and juice are combined, bubbles of carbon dioxide is produced. Gas, like carbon dioxide, may be produced in ______.

Sometimes, both physical and chemical changes occur together.