What are the two general properties of matter?, friction and mass, mass and volume, volume and density, density and mass, mass and scales, scales and volume, Density is everything around us that occupies space., true, false, Matter is everything around us that occupies space., true, false, Volume is the amount of matter in an object., true, false, Density the amount of matter in an object., true, false, Mass is the amount of matter in an object., true, false, What do we measure mass in?, liters and centiliters, kilograms and grams, liters and kilograms, seconds and hours, celcius, What do we use to measure the mass of solids?, volumes, airplanes, scales, liquids, containers, masses, What do we call the amount of space that an object occupies?, mass, density, cubic metres, friction, container, volume, Bigger objects have more volume than smaller objects., true, false, Every pure substance never has the same density., true, false, What do we use to measure volume?, m³ or mL, metres, gr or kgs, g/cm³, To find the density of an object, what do we need to know?, the object's matter and volume, the object's mass and bouyancy, the object's mass and volume, the object's matter and bouyancy, What do we use to calculate volume?, friction, hot air balloon, measuring cylinder, liquid, It measures how much matter is packed into a certain volume. It is a specific property of matter. , Density, Volume, Mass, Matter, Space, Solid, How do we measure density?, Dividing the mass by the area, in grams per cubic centimetre, in kgs per liter, Every pure substance always has the same density., true, false, How do we calculate the density of an object?, By dividing its mass by its volume, By diviging its volume by its mass, The ______ properties of matter, such as mass and volume, are the properties of all types of matter. They cannot be used to identify the matter., general, specific, The ______ properties, such as density, have a unique value and are specific for each type of matter. They help to identify it., general, specific, What density does water have?, 0.5 g/cm³, 2 g/cm³, 10 g/cm³, 1 g/cm³, An object floats when the density of the object is ____ than the density of water., lower, higher, An object sinks when the density of the object is ____ than the density of water., lower, higher, If metal has a higher density than water, then what happens to it when we put it in water?, It floats., It sinks., Why does an empty glass bottle float when we place it in water if the glass bottle is more dense than the water?, Because the air inside is less dense than the water., Because the air inside is more dense than the water., What king of balloons "fly away" in the air?, nitrogen-filled, oxygen-filled, helium-filled, Is the density of helium higher or lower than the density of air?, lower, higher, Air is matter., true, false, The Earth is surrounded by a layer of gases called the, nitrogen, air, atmosphere, oxygen, What is air made of?, 78% nitrogen, 21% oxygen, 1% other gases, 78% oxygen, 21% nitrogen, 1% other gases, 78% nitrogen, 21% oxygen, 1% helium, 78% oxygen, 21% nitrogen, 1% water, Air is a mixture of different solids., true, false, Air is a mixture of different gases., true, false, What is the most abundant gas?, oxygen, nitrogen, helium, carbon dioxide, Air has no definite shape. It adopts the shape of the container it is in., true, false, Air is a colourless, odourless liquid., true, false, Air changes volume according to temperature. It expands when heated and contracts when cooled., true, false, Air doesn't have volume., true, false, Air can move. Moving air is wind., true, false, Air has mass., true, false, Why do living things need oxygen in the ir?, for friction, for weather phenomena, for combustion, for respiration, Why do plants need carbon dioxide?, for friction, for weather phenomena, for combustion, for respiration, for photosynthesis, for energy, Wind is a source of energy., true, false, Hot air is less dense than cold air., true, false, Cold air is less dense than hot air., true, false, What are airships filled with?, hydrogen or helium, oxygen or nitrogen, hydrogen or oxygen, helium or nitrogen, A heavier object creates more friction when it is pushed along a surface. It is harder to push the object., true, false, When both surfaces are smooth, there is less friction. It is easier to push the object., true, false, The first engines were combustion engines., true, false, The first engines were steam engines., true, false.

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