Think about different mixtures that are in the kitchen. Name and describe two homogeneous mixtures and two heterogeneous mixtures.

31 What is the number of electrons in an Al3 + ion? (1) 10 (3) 3 (2) 13 (4) 16

What force in Newtons is needed to accelerate a 40 kg mass across a surface at 7.5 m/sec²?

If you change the temperature of a gas but keep the volume the same, how does the pressure change?

Do electrons move in straight lines

How did the rate of the reaction change over time in the control reaction?

How many different elements have scientists discovered? 12, 112, 118, or more than 500?

What is the total mass of Kr-42 remaining in a 20-mg sample after 48.8 hours? (1) 2.5 mg (2) 5.0 mg (3) 10 mg 4) 20 mg

Which of the following household appliances is designed to directly convert electrical energy to heat energy? A. a can opener B. a stove C. a garbage disposal D. a fan

What volume will 12.0 g of oxygen gas occupy at 25 c and a pressure of 52.7 kpa?

Identify the atom represented by this electron configuration and elaborate on its bonding properties. 1s22s22p63s23p64s13d5 a. manganese is a transition metal that can form up to five stable ionic bonds. b.