science Flashcards
Matches and materials sorting, recycling waste, and the impact on the environment methods of physical separation of mixtures. Properties of metals, semimetals, and nonmetals periodic table of elements (28 cards)
What is matter?
Matter is anything that has mass and takes up space.
True or False: All matter is made up of atoms.
True
What are the three states of matter?
Solid, liquid, and gas.
Fill in the blank: The process of separating materials based on their properties is called _____ .
sorting
What is recycling?
Recycling is the process of converting waste materials into reusable materials.
Which of the following is NOT a benefit of recycling? A) Reduces landfill waste B) Conserves natural resources C) Increases pollution
C) Increases pollution
What is the impact of plastic waste on the environment?
Plastic waste harms wildlife, pollutes oceans, and takes hundreds of years to decompose.
True or False: The periodic table organizes elements by increasing atomic number.
True
What do the rows in the periodic table represent?
The rows represent periods, which indicate the number of electron shells in the elements.
What do the columns in the periodic table represent?
The columns represent groups, which indicate elements with similar chemical properties.
Fill in the blank: Elements in Group 1 of the periodic table are known as _____ metals.
alkali
What is an example of a non-metal found in the periodic table?
Oxygen
True or False: Recycling can save energy compared to producing new materials.
True
What is composting?
Composting is the process of recycling organic waste into nutrient-rich soil.
What is the main component of the Earth’s atmosphere?
Nitrogen
Which element has the atomic number 6?
Carbon
Fill in the blank: The law of conservation of mass states that mass is neither created nor _____ in a chemical reaction.
destroyed
What is a synthetic material?
A synthetic material is a man-made substance created through chemical processes.
True or False: Metals are generally good conductors of electricity.
True
What is an example of a hazardous material?
Asbestos
Fill in the blank: The process of breaking down waste into smaller pieces for easier handling is called _____ .
shredding
What type of waste includes items like batteries and electronics?
E-waste
Which element is known for its high reactivity and is found in Group 17?
Fluorine
What is the primary goal of waste management?
To minimize the impact of waste on human health and the environment.
