Matter Makeup
Matter is anything that __________________ and __________________.
Anything that takes up space and has mass.
A sealed bag containing ice has a mass of 90 grams. After the ice melts, what should the bag and contents mass be?
90 grams
What are properties of matter (definition)?
The properties of matter are the special features or clues we use to describe, compare, and identify different objects.
When vinegar and baking soda are mixed, bubbles form. What might the bubbles be evidence of?
A chemical change (gas forming)
What are the properties of a liquid?
Definite volume, takes the shape of its container, particles are more spread out than a solid.
A student says, “I cannot see air, so air is not matter.” Is this true or false?
False
A sealed container has a mass of 160 grams before sugar dissolves in water. What should its mass be afterward if nothing enters or leaves?
160 grams
What category of properties does soft, rough, and smooth belong to?
Texture
Sand is stirred into water and later settles to the bottom. Is this a physical or chemical change?
Physical
What is the difference between a physical change and a chemical change?
A chemical change produces a substance with new properties, it cannot be undone.
Matter is made of tiny pieces that are too small to see with our eyes. What are these tiny pieces called?
Particles
A sealed container has a mass of 215 grams before two substances are mixed. What should its total mass be after mixing if no matter enters or leaves?
215 grams
List three properties of your desk.
Hard, solid, smooth, grey, orange, magnetic legs
Is painting a fence a chemical change or physical change?
Physical change
Name two examples of a chemical change.
Varied answers
What are the three main phases of matter?
Solid, Liquid, and Gas
An open cup weighs less after a reaction where gas escaped. Why?
The gas is matter that escaped from the open cup.
Why observe and record multiple properties of materials?
Several properties provide stronger evidence to identify or compare a material.
Name an observation, other than bubbles, that may provide evidence a new substance formed when substances are mixed.
Lasting color change, temperature change, or formation of a solid
What happens to the total mass when substances are mixed or changed?
The total mass does not change.
How are particles organized in a gas?
They spread out to fill the available space.
What is the difference between weight and mass?
Mass is the amount of matter in something, weight is the effect of the gravity on something.
Two white powders look alike. Name two safe properties or tests that could help tell them apart.
Solubility in water, magnetism, texture, particle size, or another safe observable/measurable property
When wood burns, what is the evidence of a chemical change?
Ash formed, smoke (gas), permanent change in color of the wood
A mystery material is shiny, magnetic, conducts electricity, and can be shaped into different forms. What type of material might it be?
Metal