Elements and their Combinations Unit D Elements and their Combinations

What is matter? Something that has mass and takes up space Something that is important Something that is a problem Something that takes up no space and is invisible

What is matter made up of? Organs Cells Atoms Links

Which element is a metal? Oxygen Gold Carbon Helium

Which is NOT a property of a metal? Shiny Can bend Melts easily Gets hot

What is the smallest number of parts in a compound? 1 2 3 4

You can see an atom with Your eye A special telescope A magnifying glass A special microscope

Atoms may combine to form a(n) Mixture Molecule Nucleus Element

What does periodic mean Happening sometimes Happening all the time Happening at regular times Happening at the end

What element is a building block of matter in living things? Carbon Hydrogen Helium Oxygen

Which one of the following is NOT one of your senses? Hearing Sight Touch Thinking

Which group lists the physical properties of materials? Shape, color, ability to float Smell, density, ability to rust Color, texture, ability to burn Taste, texture ability to rust

Which is an example of a chemical change? Cutting paper Making ice Burning wood Boiling water

A compound is made up of An element Different kinds of atoms The same kind of atom Salt and water

Water is a Compound An element A mixture A solution

What will happen in this beaker? Nothing The water will boil The water will disappear The sugar will dissolve

The temperature at which a solid changes to a liquid is called the Boiling point Celsius scale Fahrenheit scale Melting point

Some foods taste because they contain a type of chemical called an acid. Which food contains acid? Ice cream Lemons Peas Chicken

What is NOT a property of salt? It is white It is made of tiny crystals It tastes sour It mixes in water

The amount of space an object takes up is called its Temperature Mass Volume Shape

Which kind of substance has no definite shape and probably a large amount of space between its particles? Solid Liquid Gas Water

Which substance has no definite shape but has a definite volume? Iron fillings Liquid water Nitrogen gas Salt crystals

The process of liquid water changing to a gas is called Freezing Precipitation Melting Vaporization

Which is a property of glass? It is clear It can bend It is soft It is a liquid at room temperature

Chocolate milk is A chemical A compound A mixture A reaction

Hydrogen combines with oxygen to make water Hydrogen combines with oxygen to make water. A scientist calls the hydrogen and oxygen Ingredients Reactants Products Energy

A difference between a physical change and a chemical change is that in a chemical change A new substance forms No new substance forms Only the shape of the substance changes Only the size of the substance changes

What do solids, liquids, and gases have in common? They can be squeezed to take up less space People can see them They have shape They are made up of particles